Granted Patent
Utility
US 4,835,606 · App. 07/175,801
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Inventor:
Roger Peck
Patented Case
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Granted: May 30, 1989
Filed: Mar 31, 1988
Inventor
Roger Peck
Assignee (at issue)
GEC-Marconi Ltd.
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.