Granted Patent
Utility
US 4,861,338 · App. 07/154,904
Safety syringe
Inventors:
George E. Mathiesen, Charles H. Mayo, II
Patented Case
View Patent ↗
Granted: Aug 29, 1989
Filed: Feb 11, 1988
Inventors
George E. Mathiesen
Charles H. Mayo, II
Assignee (at issue)
Mediverse, 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.