Granted Patent
Utility
US 4,896,680 · App. 07/150,673
Method of extending a flap of skin
Inventor:
Bernard Hirshowitz
Patented Case
View Patent ↗
Granted: Jan 30, 1990
Filed: Feb 1, 1988
Inventor
Bernard Hirshowitz
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.