Granted Patent
Utility
US 4,756,501 · App. 06/916,343
Hanger for drainage device
Inventors:
Riccardo Quercia, Quinton Farrar, Frederick A. Everett, Jr.
Patented Case
View Patent ↗
Granted: Jul 12, 1988
Filed: Oct 7, 1986
Inventors
Riccardo Quercia
Quinton Farrar
Frederick A. Everett, Jr.
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.