Granted Patent
Utility
US 4,673,151 · App. 06/771,447
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Inventor:
Edward C. Pelz
Patented Case
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Granted: Jun 16, 1987
Filed: Aug 30, 1985
Inventor
Edward C. Pelz
Assignee (at issue)
Navistar International Corporation
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.