Granted Patent
Utility
US 4,600,663 · App. 06/659,503
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Inventor:
Brian Robertson
Patented Case
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Granted: Jul 15, 1986
Filed: Oct 10, 1984
Inventor
Brian Robertson
Assignee (at issue)
General Electric 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.