Patents Issued in April 30, 1991
  • Clock
    Patent number: D316522
    Type: Grant
    Filed: March 21, 1988
    Date of Patent: April 30, 1991
    Assignee: Walter Henkels GmbH
    Inventor: Siegfried Holterscheidt
  • Wristwatch
    Patent number: D316523
    Type: Grant
    Filed: April 6, 1988
    Date of Patent: April 30, 1991
    Assignee: Seiko Epson Corporation
    Inventor: Yoshio Hirabayashi
  • Constant cycle electric timer
    Patent number: D316524
    Type: Grant
    Filed: May 18, 1988
    Date of Patent: April 30, 1991
    Inventor: Keith Ericson
  • Measuring gauge for wrench sizing
    Patent number: D316525
    Type: Grant
    Filed: October 5, 1988
    Date of Patent: April 30, 1991
    Inventors: Robert Waddell, Roger N. Orser
  • Ultrasonic distance estimator
    Patent number: D316526
    Type: Grant
    Filed: May 24, 1989
    Date of Patent: April 30, 1991
    Assignee: Solar Wide Industrial Limited
    Inventor: Ram Shalvi
  • Analytic colormetric instrument
    Patent number: D316527
    Type: Grant
    Filed: November 9, 1988
    Date of Patent: April 30, 1991
    Assignee: Exocell, Inc.
    Inventor: Robert G. Neuman
  • Trolling motor tilt position alarm
    Patent number: D316528
    Type: Grant
    Filed: December 9, 1988
    Date of Patent: April 30, 1991
    Inventor: Samuel D. Wilson, Jr.
  • Measuring vessel
    Patent number: D316529
    Type: Grant
    Filed: January 6, 1989
    Date of Patent: April 30, 1991
    Inventor: Wellington E. Beckman, Sr.
  • Bow clasp
    Patent number: D316530
    Type: Grant
    Filed: January 4, 1988
    Date of Patent: April 30, 1991
    Inventor: Leyman E. Clifton
  • Van
    Patent number: D316531
    Type: Grant
    Filed: February 16, 1988
    Date of Patent: April 30, 1991
    Inventor: Vahe Karapetian
  • Automobile tire
    Patent number: D316532
    Type: Grant
    Filed: February 9, 1989
    Date of Patent: April 30, 1991
    Assignee: Bridgestone Corporation
    Inventors: Toru Tsuda, Shinichi Watanabe
  • Tire
    Patent number: D316533
    Type: Grant
    Filed: April 17, 1989
    Date of Patent: April 30, 1991
    Assignee: The Uniroyal Goodrich Tire Company
    Inventor: Laurie W. Killian
  • Tire
    Patent number: D316534
    Type: Grant
    Filed: April 17, 1989
    Date of Patent: April 30, 1991
    Assignee: The Uniroyal Goodrich Tire Company
    Inventor: John A. Hutz
  • Window pad
    Patent number: D316535
    Type: Grant
    Filed: June 27, 1988
    Date of Patent: April 30, 1991
    Inventor: George M. Fenn
  • Combined automobile splash guard and display unit
    Patent number: D316536
    Type: Grant
    Filed: February 3, 1988
    Date of Patent: April 30, 1991
    Assignee: Rally Manufacturing, Inc.
    Inventors: Pierre Charet, Duke Kraai
  • Power boat
    Patent number: D316537
    Type: Grant
    Filed: May 8, 1989
    Date of Patent: April 30, 1991
    Inventor: Adam E. Prystupa
  • Audio power supply
    Patent number: D316538
    Type: Grant
    Filed: April 26, 1988
    Date of Patent: April 30, 1991
    Assignee: Mission International Limited
    Inventor: Farad Azima
  • Electrical switch for a surge protector
    Patent number: D316539
    Type: Grant
    Filed: January 6, 1989
    Date of Patent: April 30, 1991
    Assignee: Curtis Manufacturing Company, Inc.
    Inventors: Thomas W. Judd, Edward L. Hames
  • Push button switch
    Patent number: D316540
    Type: Grant
    Filed: March 31, 1989
    Date of Patent: April 30, 1991
    Assignee: Nihon Kaiheiki Kogyo Kabushiki Kaisha
    Inventor: Kenichi Hirose
  • Hand-held data entry terminal
    Patent number: D316541
    Type: Grant
    Filed: February 6, 1989
    Date of Patent: April 30, 1991
    Assignee: Impetus, Inc.
    Inventor: Leslie W. Roberts
  • Computer keyboard
    Patent number: D316542
    Type: Grant
    Filed: June 5, 1989
    Date of Patent: April 30, 1991
    Assignee: nView Corporation
    Inventor: James H. Vogeley
  • Portable computer
    Patent number: D316543
    Type: Grant
    Filed: May 31, 1988
    Date of Patent: April 30, 1991
    Assignee: Texas Instruments Incorporated
    Inventors: Thomas R. Grimm, LaVaughn F. Watts, Jr., Hermon L. Pope, Jr.
  • Portable computer or similar article
    Patent number: D316544
    Type: Grant
    Filed: January 23, 1989
    Date of Patent: April 30, 1991
    Assignee: Apple Computer, Inc.
    Inventors: Hartmut H. Esslinger, Eric I. Gruenberg, James R. Stewart
  • Portable computer or similar article
    Patent number: D316545
    Type: Grant
    Filed: January 23, 1989
    Date of Patent: April 30, 1991
    Assignee: Apple Computer, Inc.
    Inventors: Hartmut H. Esslinger, Eric I. Gruenberg, James R. Stewart
  • Rack of modems
    Patent number: D316546
    Type: Grant
    Filed: March 10, 1989
    Date of Patent: April 30, 1991
    Assignee: International Business Machines Corporation
    Inventors: Gilbert Pedinielli, Daniel Richelet
  • Video display monitor
    Patent number: D316547
    Type: Grant
    Filed: April 23, 1987
    Date of Patent: April 30, 1991
    Assignee: Digital Equipment Corporation
    Inventors: Robert Faranda, Hirotomi Teranishi, Bernard Maurer
  • Combined telephone, digital clock and radio
    Patent number: D316548
    Type: Grant
    Filed: July 17, 1990
    Date of Patent: April 30, 1991
    Assignee: Goly Industrial Company Limited
    Inventor: Wai C. Yeung
  • Keyboard for staff locator systems
    Patent number: D316549
    Type: Grant
    Filed: April 19, 1988
    Date of Patent: April 30, 1991
    Assignee: Tateco AB
    Inventor: Jan E. H. Hampf
  • Combined earphone and receiver
    Patent number: D316550
    Type: Grant
    Filed: November 7, 1988
    Date of Patent: April 30, 1991
    Assignee: Sony Corporation
    Inventor: Takashi Sogabe
  • Headphone
    Patent number: D316551
    Type: Grant
    Filed: December 29, 1988
    Date of Patent: April 30, 1991
    Assignee: Sony Corporation
    Inventor: Kazuo Ichikawa
  • Telephone exchanger
    Patent number: D316552
    Type: Grant
    Filed: January 8, 1990
    Date of Patent: April 30, 1991
    Inventor: Orlando Miozzo
  • Audio amplifier
    Patent number: D316553
    Type: Grant
    Filed: April 26, 1988
    Date of Patent: April 30, 1991
    Assignee: Mission International Limited
    Inventor: Farad Azima
  • Combined video camera and video tape recorder
    Patent number: D316554
    Type: Grant
    Filed: May 23, 1988
    Date of Patent: April 30, 1991
    Assignee: Sharp Corporation
    Inventors: Hiroshi Ooi, Sho Okamura
  • Combined video camera and video tape recorder
    Patent number: D316555
    Type: Grant
    Filed: June 8, 1988
    Date of Patent: April 30, 1991
    Assignee: Sharp Corporation
    Inventors: Hiroshi Ooi, Atsuko Hattori
  • Camera with wrist strap
    Patent number: D316556
    Type: Grant
    Filed: March 16, 1988
    Date of Patent: April 30, 1991
    Assignee: Eastman Kodak Company
    Inventors: Alan G. Reddig, James S. Couch, Robert W. Mervar
  • Portable word processor
    Patent number: D316557
    Type: Grant
    Filed: November 25, 1988
    Date of Patent: April 30, 1991
    Assignee: Casio Computer Co., Ltd.
    Inventor: Yukinori Ido
  • Typewriter
    Patent number: D316558
    Type: Grant
    Filed: January 6, 1989
    Date of Patent: April 30, 1991
    Assignee: Smith Corona Corporation
    Inventor: Paul M. Pierce
  • Control unit for electronic cash register or the like
    Patent number: D316559
    Type: Grant
    Filed: January 3, 1989
    Date of Patent: April 30, 1991
    Assignee: International Business Machines Corporation
    Inventor: Timothy D. Wetzel
  • Ink ribbon cartridge
    Patent number: D316561
    Type: Grant
    Filed: October 5, 1989
    Date of Patent: April 30, 1991
    Assignee: Seiko Epson Corporation
    Inventor: Akira Koyabu
  • Tape printing machine
    Patent number: D316562
    Type: Grant
    Filed: March 4, 1988
    Date of Patent: April 30, 1991
    Assignee: Varitronic Systems, Inc.
    Inventor: Nancy Lavander
  • Printer
    Patent number: D316563
    Type: Grant
    Filed: June 14, 1988
    Date of Patent: April 30, 1991
    Assignee: Seiko Epson Corporation
    Inventors: Friedrich F. Frenkler, Hitoshi Igarashi, Kaneko Isao
  • Copying machine
    Patent number: D316564
    Type: Grant
    Filed: July 13, 1989
    Date of Patent: April 30, 1991
    Assignee: Sharp Corporation
    Inventors: Mikio Kosako, Atsuko Hattori, Yasuhiko Mano
  • Combined portable holder for file and assorted desk articles
    Patent number: D316565
    Type: Grant
    Filed: June 8, 1988
    Date of Patent: April 30, 1991
    Inventor: Z. Lee Rust
  • Paper clip container
    Patent number: D316566
    Type: Grant
    Filed: July 14, 1988
    Date of Patent: April 30, 1991
    Inventor: Jam Sun
  • Mixed drink machine
    Patent number: D316567
    Type: Grant
    Filed: February 16, 1988
    Date of Patent: April 30, 1991
    Inventor: James Beckles
  • Beverage vending machine front panel
    Patent number: D316568
    Type: Grant
    Filed: May 9, 1988
    Date of Patent: April 30, 1991
    Assignee: Gross-Given Manufacturing Company
    Inventor: Walter L. Koch
  • Display sign
    Patent number: D316569
    Type: Grant
    Filed: November 4, 1988
    Date of Patent: April 30, 1991
    Assignee: Popmedia Ltd.
    Inventors: William E. Leggate, Michael G. Sirois
  • Identification tag holder
    Patent number: D316570
    Type: Grant
    Filed: September 22, 1988
    Date of Patent: April 30, 1991
    Inventor: Jerl A. Golden
  • Display form
    Patent number: D316571
    Type: Grant
    Filed: August 16, 1988
    Date of Patent: April 30, 1991
    Inventors: D. Romero-Comas, Maria Soledad-Duran
  • Game board
    Patent number: D316572
    Type: Grant
    Filed: March 23, 1988
    Date of Patent: April 30, 1991
    Assignee: Les Entreprises Aube et Khacho Inc.
    Inventor: Richard Aube