Patents by Inventor Marshall Kaufman

Marshall Kaufman 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).

  • Patent number: 4074870
    Abstract: A film retriever for and a method of retrieving a free end of a convolutely wound film from inside a cylindrical cassette through an exit opening in a circumferential wall on said cassette. The retriever comprises a first, upper, thin, flexible, springy strip of material having an anterior tongue portion of a length slightly less than the interior circumference of the cassette and a wider, longer posterior portion, said posterior portion having a pair of spaced, parallel slots. The retriever further comprises a second, lower, thin, flexible, springy strip of material having a curled, anterior tongue portion of a length slightly less than the interior diameter of the cassette and a wider, longer posterior portion having tabs therein which slidingly engage the slots of the first posterior portion.
    Type: Grant
    Filed: July 22, 1976
    Date of Patent: February 21, 1978
    Inventor: Marshall Kaufman
  • Patent number: D283232
    Type: Grant
    Filed: April 28, 1983
    Date of Patent: April 1, 1986
    Inventor: Marshall Kaufman