Granted Patent
Utility
US 4,370,071 · App. 06/215,603
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Inventors:
Adolph B. Habich, Ronald E. Hunt
Patented Case
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Granted: Jan 25, 1983
Filed: Dec 12, 1980
Inventors
Adolph B. Habich
Ronald E. Hunt
Assignee (at issue)
International Business Machines Corporation
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.