Patents by Inventor John L. Clem

John L. Clem 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).

  • Straight sweep windshield wiper
    Patent number: 4245369
    Abstract: An apparatus for driving a windshield wiper blade in an oscillatory motion over the surface of a windshield. The wiper blade is driven in a straight line over the windshield surface rather than in the usual arcuate or modified arcuate path.
    Type: Grant
    Filed: July 2, 1979
    Date of Patent: January 20, 1981
    Assignee: Sprague Devices, Inc.
    Inventor: John L. Clem