Granted Patent
Utility
US 4,621,638 · App. 06/754,716
Hard elastic sutures
Inventor:
Thomas A. Silvestrini
Patented Case
View Patent ↗
Granted: Nov 11, 1986
Filed: Jul 15, 1985
Inventor
Thomas A. Silvestrini
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.