Granted Patent
Utility
US 4,628,912 · App. 06/642,248
Adjustable root and tip extenders for the stiffener cylinder of a penile erection device
Inventor:
Robert E. Fischell
Patented Case
View Patent ↗
Granted: Dec 16, 1986
Filed: Aug 20, 1984
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.