Granted Patent
Utility
US 4,730,607 · App. 06/772,734
Stiffener cylinder for an inflatable penile erection device
Inventor:
Robert E. Fischell
Patented Case
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Granted: Mar 15, 1988
Filed: Sep 5, 1985
Inventor
Robert E. Fischell
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.