Granted Patent
Utility
US 4,232,979 · App. 05/970,186
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Inventors:
Glenn W. Johnson, Jr., Sidney A. Heenan
Patented Case
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Granted: Nov 11, 1980
Filed: Dec 18, 1978
Inventors
Glenn W. Johnson, Jr.
Sidney A. Heenan
Assignee (at issue)
ARTERICA 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.