Granted Patent
Utility
US 4,727,312 · App. 06/812,906
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Inventor:
Robert G. Fulks
Patented Case
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Granted: Feb 23, 1988
Filed: Dec 23, 1985
Inventor
Robert G. Fulks
Assignee (at issue)
Genrad, Inc.
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.