Granted Patent
Utility
US 4,938,365 · App. 07/142,231
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Inventors:
Gerald A. Conway, Kin G. Cheng
Patented Case
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Granted: Jul 3, 1990
Filed: Jan 11, 1988
Inventors
Gerald A. Conway
Kin G. Cheng
Assignee (at issue)
Gerald Conway & 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.