Granted Patent
Utility
US 4,532,744 · App. 06/529,468
Locking device for membrane fastener apparatus
Inventors:
Heinz W. Beneze, Walter Tomaszewski
Patented Case
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Granted: Aug 6, 1985
Filed: Sep 6, 1983
Inventors
Heinz W. Beneze
Walter Tomaszewski
Assignee (at issue)
The Firestone Tire & Rubber Company
This patent predates the USPTO's electronic file wrapper — prosecution documents from this era exist only in the Patent Office's paper records. A certified copy of the file history can be ordered from the USPTO's paper archives.