Granted Patent
Utility
US 4,705,509 · App. 06/941,355
Power syringe with volume reducing adapter
Inventor:
John H. Stade
Patented Case
View Patent ↗
Granted: Nov 10, 1987
Filed: Dec 15, 1986
Inventor
John H. Stade
Assignee (at issue)
MALLINCKRODT LLC
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.