Granted Patent
Utility
US 6,656,550 · App. 09/558,355
Dilatation device of uniform outer diameter
Inventor:
Alan M. Zamore
Patented Case
View Patent ↗
Granted: Dec 2, 2003
Filed: Apr 26, 2000
Inventor
Alan M. Zamore
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.