Granted Patent
Utility
US 4,748,680 · App. 06/894,612
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Inventor:
George D. Margolin
Patented Case
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Granted: May 31, 1988
Filed: Aug 8, 1986
Inventor
George D. Margolin
Assignee (at issue)
Photon Devices, Ltd.
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.