Granted Patent
Utility
US 4,650,491 · App. 06/829,264
Locking mechanism for prosthesis components
Inventor:
Thomas J. Parchinski
Patented Case
View Patent ↗
Granted: Mar 17, 1987
Filed: Feb 14, 1986
Inventor
Thomas J. Parchinski
Assignee (at issue)
Pfizer Hospital Products Group, Inc.
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.