Granted Patent
Utility
US 4,346,876 · App. 06/148,068
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Inventors:
Kenneth L. Guenther, Jerry J. Kosner, Rolf B. Erikson, Edward H. Zemke
Patented Case
View Patent ↗
Granted: Aug 31, 1982
Filed: May 12, 1980
Inventors
Kenneth L. Guenther
Jerry J. Kosner
Rolf B. Erikson
Edward H. Zemke
Assignee (at issue)
Bell and Howell, LLC
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.