Patents by Inventor Thomas J. Zimmerman

Thomas J. Zimmerman 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).

  • Desk top telephone set
    Patent number: D307904
    Type: Grant
    Filed: December 23, 1988
    Date of Patent: May 15, 1990
    Assignee: Wood Communications Corp.
    Inventor: Thomas J. Zimmerman