Granted Patent
Utility
US 5,156,613 · App. 07/654,860
Collagen welding rod material for use in tissue welding
Inventor:
Philip N. Sawyer
Patented Case
View Patent ↗
Granted: Oct 20, 1992
Filed: Feb 13, 1991
Inventor
Philip N. Sawyer
Assignee (at issue)
Interface Biomedical Laboratories, Corp.
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.