Granted Patent
Utility
US 4,735,315 · App. 07/096,597
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Inventors:
James R. Oliff, Rodney K. Calvert
Patented Case
View Patent ↗
Granted: Apr 5, 1988
Filed: Sep 14, 1987
Inventors
James R. Oliff
Rodney K. Calvert
Assignee (at issue)
The Mead 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.