Patents by Inventor Fred T. Gerbig

Fred T. Gerbig 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).

  • Air filter system for clean room
    Patent number: 4601737
    Abstract: A filter media contained in a rectangular frame rests on and covers the opening of an overhead rectangular support frame, preferably constructed out of metal channel bars with a resilient seal between the filter frame and the support frame and a spring loaded clamp for adjustably and releasably holding the filter frame snugly against the support frame.
    Type: Grant
    Filed: December 17, 1984
    Date of Patent: July 22, 1986
    Inventor: Fred T. Gerbig