Polygonal Modifier Patents (Class D26/91)
  • Luminaire
    Patent number: D260685
    Type: Grant
    Filed: May 23, 1978
    Date of Patent: September 8, 1981
    Inventor: Frederic Zurcher
  • Luminaire
    Patent number: D260938
    Type: Grant
    Filed: May 23, 1978
    Date of Patent: September 22, 1981
    Inventor: Frederic Zurcher
  • Luminaire
    Patent number: D268134
    Type: Grant
    Filed: November 20, 1980
    Date of Patent: March 1, 1983
    Inventor: Frederic Zurcher