Patents by Inventor Dennis Leffler

Dennis Leffler 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).

  • Sink module
    Patent number: D287748
    Type: Grant
    Filed: March 1, 1984
    Date of Patent: January 13, 1987
    Assignee: Pelton and Crane Company
    Inventors: Ned Landan, Dennis Leffler, Dan Truette