Patents by Inventor Roland W. Petersdorf

Roland W. Petersdorf 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).

  • Hall Effect tester for heated window grids
    Patent number: 4395677
    Abstract: An electronic tester for window grid heaters using a Hall Effect handheld probe device for use in detecting breaks in the grid lines. The instrument is intended for fabrication as an integrated circuit device to provide a low-cost unit which is advantageous for testing vehicles being mass produced. The device allows external electrical continuity testing of rear window heated grid systems obviating in-car testing on the assembly line.
    Type: Grant
    Filed: February 13, 1981
    Date of Patent: July 26, 1983
    Assignee: Chrysler Corporation
    Inventor: Roland W. Petersdorf