Billboard Type Patents (Class D20/39)
  • Portable exhibit system
    Patent number: D256138
    Type: Grant
    Filed: March 13, 1978
    Date of Patent: July 29, 1980
    Inventor: Ian A. Tesar
  • Billboard display apparatus
    Patent number: D279389
    Type: Grant
    Filed: November 16, 1983
    Date of Patent: June 25, 1985
    Inventors: Thomas B. Douglas, A. Clark Dunklin
  • Advertising display structure and sports facility
    Patent number: D280744
    Type: Grant
    Filed: October 24, 1983
    Date of Patent: September 24, 1985
    Inventor: Marcia Gaylor
  • Outdoor advertising sign
    Patent number: D285456
    Type: Grant
    Filed: February 15, 1984
    Date of Patent: September 2, 1986
    Inventor: Peter Wiens
  • Outdoor advertising sign
    Patent number: D286304
    Type: Grant
    Filed: August 2, 1984
    Date of Patent: October 21, 1986
    Inventor: Peter Wiens
  • Sign board
    Patent number: D303814
    Type: Grant
    Filed: September 18, 1987
    Date of Patent: October 3, 1989
    Inventor: David F. Beck
  • Advertising mini-billboard
    Patent number: D308545
    Type: Grant
    Filed: October 23, 1987
    Date of Patent: June 12, 1990
    Inventor: C. E. Gentry