Perpetual Patents (Class D19/25)
  • Block calendar
    Patent number: D245422
    Type: Grant
    Filed: March 27, 1975
    Date of Patent: August 16, 1977
    Inventor: Philip K. Vanderhyden, Jr.
  • Date calendar
    Patent number: D245913
    Type: Grant
    Filed: April 16, 1976
    Date of Patent: September 27, 1977
    Assignee: Ketcham & McDougall, Inc.
    Inventor: William Macowski
  • Wall calendar
    Patent number: D246048
    Type: Grant
    Filed: September 18, 1975
    Date of Patent: October 11, 1977
    Inventor: Lee J. Damman
  • Perpetual digital calendar
    Patent number: D250031
    Type: Grant
    Filed: August 23, 1976
    Date of Patent: October 24, 1978
    Inventor: Eli Sasson
  • Perpetual calendar
    Patent number: D250032
    Type: Grant
    Filed: August 23, 1976
    Date of Patent: October 24, 1978
    Inventor: Eli Sasson
  • Perpetual calendar
    Patent number: D250268
    Type: Grant
    Filed: August 23, 1976
    Date of Patent: November 14, 1978
    Inventor: Eli Sasson
  • Wall calendar
    Patent number: D250414
    Type: Grant
    Filed: February 22, 1977
    Date of Patent: November 28, 1978
    Assignee: Arlac-Werk Heiko Ippen
    Inventor: Hans Halm
  • Perpetual calendar
    Patent number: D250959
    Type: Grant
    Filed: November 29, 1976
    Date of Patent: January 30, 1979
    Inventor: Wilmar L. Prescott
  • Combined radio receiver and perpetual calendar
    Patent number: D251297
    Type: Grant
    Filed: January 23, 1976
    Date of Patent: March 13, 1979
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Masami Ueda, Benito Mishiro, Toshio Igo, Masanori Hamada
  • Perpetual calendar
    Patent number: D252212
    Type: Grant
    Filed: September 24, 1976
    Date of Patent: June 26, 1979
    Inventor: Henry S. Harrison
  • Medical calendar
    Patent number: D253831
    Type: Grant
    Filed: April 8, 1977
    Date of Patent: January 1, 1980
    Inventor: Vivian L. Carmichael
  • Combined pencil caddy and perpetual calendar
    Patent number: D254853
    Type: Grant
    Filed: April 3, 1978
    Date of Patent: April 29, 1980
    Assignee: Ketcham & McDougall, Inc.
    Inventor: Jerome A. Grunstad
  • Combined electronic clock and perpetual calendar
    Patent number: D258811
    Type: Grant
    Filed: November 28, 1978
    Date of Patent: April 7, 1981
    Inventor: Chi T. You
  • Combined cabinet holder for paper rolls and perpetual calendar
    Patent number: D259001
    Type: Grant
    Filed: June 26, 1978
    Date of Patent: April 28, 1981
    Inventor: William F. Mullaney
  • Disk for a menstrual calendar
    Patent number: D261275
    Type: Grant
    Filed: January 24, 1979
    Date of Patent: October 13, 1981
    Inventor: Kurt Christensen
  • Calendar
    Patent number: D268188
    Type: Grant
    Filed: December 12, 1980
    Date of Patent: March 8, 1983
    Inventor: Milka Vlahovic
  • Modular calendar
    Patent number: D274535
    Type: Grant
    Filed: June 4, 1981
    Date of Patent: July 3, 1984
    Inventor: Brenda Hicks
  • Perpetual calendar
    Patent number: D277391
    Type: Grant
    Filed: July 26, 1982
    Date of Patent: January 29, 1985
    Inventor: Helen Mooney
  • Telephone index
    Patent number: D277394
    Type: Grant
    Filed: August 26, 1982
    Date of Patent: January 29, 1985
    Inventor: Michael H. Assels
  • Perpetual calendar
    Patent number: D279689
    Type: Grant
    Filed: December 16, 1982
    Date of Patent: July 16, 1985
    Inventor: Arthur Fedor
  • Calendar
    Patent number: D289905
    Type: Grant
    Filed: October 9, 1984
    Date of Patent: May 19, 1987
    Assignees: Jeffrey B. Goldring, Marc B. Goldring, Diane E. Goldring
    Inventor: William Goldring
  • Automatic telephone directory
    Patent number: D290267
    Type: Grant
    Filed: September 6, 1984
    Date of Patent: June 9, 1987
    Inventor: Jerry W. Jones
  • Desk calendar
    Patent number: D292715
    Type: Grant
    Filed: March 26, 1985
    Date of Patent: November 10, 1987
    Assignee: Hill Products Limited
    Inventor: Michael A. Hill
  • Hanging board calendar
    Patent number: D296567
    Type: Grant
    Filed: February 13, 1984
    Date of Patent: July 5, 1988
    Inventor: Elsie T. Muramatsu