Demonstrator Or Exhibitor (10) Patents (Class D19/62)
Vehicle trainer (Class D19/63)
Movable indicator or changeable exhibitor (Class D19/64)
  • Educational aide for measuring mass
    Patent number: D242787
    Type: Grant
    Filed: January 28, 1975
    Date of Patent: December 21, 1976
    Assignee: Xerox Corporation
    Inventor: Michael J. Kane
  • Educational aide for teaching physical properties of light
    Patent number: D242793
    Type: Grant
    Filed: January 28, 1975
    Date of Patent: December 21, 1976
    Assignee: Xerox Corporation
    Inventor: Michael J. Kane
  • Tape recorder educational board
    Patent number: D242857
    Type: Grant
    Filed: October 15, 1974
    Date of Patent: December 28, 1976
    Inventor: Jack N. Holcomb
  • Educational chromatograph
    Patent number: D243603
    Type: Grant
    Filed: September 13, 1974
    Date of Patent: March 8, 1977
    Inventor: John P. Salsgiver
  • Rotary engine model
    Patent number: D244760
    Type: Grant
    Filed: March 24, 1975
    Date of Patent: June 21, 1977
    Inventor: Ronald L. Phillips
  • Dental hygiene teaching apparatus or the like
    Patent number: D247503
    Type: Grant
    Filed: September 29, 1975
    Date of Patent: March 14, 1978
    Inventor: William C. Hoisington
  • Folding puzzle
    Patent number: D248987
    Type: Grant
    Filed: April 10, 1975
    Date of Patent: August 15, 1978
    Inventor: Mary Ann Paschal
  • Fluorescent tube demonstration kit
    Patent number: D251094
    Type: Grant
    Filed: April 7, 1977
    Date of Patent: February 13, 1979
    Assignee: Developmental Sciences, Inc.
    Inventors: Howard E. Krachman, Larry G. Lindsey
  • Electronic analog computer
    Patent number: D251598
    Type: Grant
    Filed: October 18, 1977
    Date of Patent: April 17, 1979
    Inventor: Edwin Z. Gabriel
  • Combined display and selection console
    Patent number: D252213
    Type: Grant
    Filed: July 3, 1978
    Date of Patent: June 26, 1979
    Inventor: Myron L. Denhoff
  • Control panel for a fire control combat simulator
    Patent number: D252460
    Type: Grant
    Filed: April 11, 1977
    Date of Patent: July 24, 1979
    Assignee: Chrysler Corporation
    Inventors: Carmelo P. Milia, Richard L. Gray
  • Portable teaching aid
    Patent number: D252758
    Type: Grant
    Filed: May 2, 1977
    Date of Patent: August 28, 1979
    Inventor: Lester E. Prall
  • Display model of an assembly of engine parts
    Patent number: D253313
    Type: Grant
    Filed: December 1, 1977
    Date of Patent: October 30, 1979
    Assignee: McQuay-Norris, Inc.
    Inventor: Michael P. Josvanger
  • Apparatus for indicating numerical concepts
    Patent number: D253709
    Type: Grant
    Filed: October 14, 1977
    Date of Patent: December 18, 1979
    Assignee: Tomy Kogyo Co., Inc.
    Inventor: Masami Shiraishi
  • Demonstrator for indicating the effect of additive in engine oil and the like
    Patent number: D254793
    Type: Grant
    Filed: January 11, 1978
    Date of Patent: April 22, 1980
    Inventor: Clinton H. Morey
  • Demonstration device or the like
    Patent number: D254917
    Type: Grant
    Filed: January 13, 1978
    Date of Patent: May 6, 1980
    Inventor: Noel E. Council
  • Colon model
    Patent number: D256373
    Type: Grant
    Filed: December 2, 1977
    Date of Patent: August 12, 1980
    Inventor: Gerald Marks
  • Dental floss dispenser
    Patent number: D257402
    Type: Grant
    Filed: October 31, 1978
    Date of Patent: October 14, 1980
    Inventors: David H. Denton, David D. Purdom
  • Molecular model
    Patent number: D258597
    Type: Grant
    Filed: August 26, 1977
    Date of Patent: March 17, 1981
    Inventor: Edward J. Barrett
  • Biliary tree model
    Patent number: D258668
    Type: Grant
    Filed: February 8, 1979
    Date of Patent: March 24, 1981
    Inventor: James P. Moss
  • Solar demonstration unit
    Patent number: D261279
    Type: Grant
    Filed: December 21, 1978
    Date of Patent: October 13, 1981
    Assignee: Columbia Chase Corporation
    Inventor: Walter H. Barrett
  • Mathematical aid
    Patent number: D262892
    Type: Grant
    Filed: July 2, 1979
    Date of Patent: February 2, 1982
    Inventor: Burton S. Heiko