Overhead Or Opaque Type Patents (Class D16/232)
  • Overhead projector
    Patent number: D305904
    Type: Grant
    Filed: August 5, 1986
    Date of Patent: February 6, 1990
    Assignee: Ricoh Company, Ltd.
    Inventor: Nobuki Matsumoto
  • Light box assembly for an overhead projector
    Patent number: D307030
    Type: Grant
    Filed: April 10, 1987
    Date of Patent: April 3, 1990
    Assignee: Buhl Industries
    Inventor: Henry Kyhl
  • Overhead projector
    Patent number: D317616
    Type: Grant
    Filed: September 30, 1988
    Date of Patent: June 18, 1991
    Assignee: Fuji Photo Film Co., Ltd.
    Inventor: Minoru Shiiba