Granted Patent
Utility
US 4,669,172 · App. 06/799,299
Method for fabrication of flexible shaft
Inventor:
Claude E. Petruzzi
Patented Case
View Patent ↗
Granted: Jun 2, 1987
Filed: Nov 20, 1985
Inventor
Claude E. Petruzzi
Assignee (at issue)
Circon Corporation
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.