Patents by Inventor Neal A. Didriksen

Neal A. Didriksen 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).

  • Indexing means for tape cassette
    Patent number: 4635878
    Abstract: A tape cassette has a springloaded indexing mechanism to urge the cassette reels in a tape winding directions so as to tension the free run of tape between the reels whenever the cassette is removed from the tape transport machine.
    Type: Grant
    Filed: May 20, 1985
    Date of Patent: January 13, 1987
    Assignee: Ampex Corporation
    Inventor: Neal A. Didriksen