Patents by Inventor Irving Pfefer

Irving Pfefer has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Demountable photo vignetting device
    Patent number: 4107716
    Abstract: A demountable, readily portable photo vignetting kit includes a mounting plate for securement of the assembled kit to the lens mount of a camera and track means on said mounting plate for moveably orienting a vignetting screen standard to permit various photographic effects to be achieved during the taking of a photograph.
    Type: Grant
    Filed: April 29, 1976
    Date of Patent: August 15, 1978
    Inventor: Irving Pfefer
  • Vignetting device
    Patent number: D246527
    Type: Grant
    Filed: February 23, 1976
    Date of Patent: November 29, 1977
    Inventor: Irving Pfefer