Granted Patent
Utility
US 4,634,525 · App. 06/657,555
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Inventor:
Howard W. Yant
Patented Case
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Granted: Jan 6, 1987
Filed: Oct 4, 1984
Inventor
Howard W. Yant
Assignee (at issue)
Westinghouse Electric Company LLC
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.