Granted Patent
Utility
US 4,685,082 · App. 06/704,359
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Inventors:
Kin Cheung, Jeffrey W. Einarson
Patented Case
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Granted: Aug 4, 1987
Filed: Feb 22, 1985
Inventors
Kin Cheung
Jeffrey W. Einarson
Assignee (at issue)
Wang Laboratories, 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.