Granted Patent
Utility
US 5,542,873 · App. 08/385,173
Novel media valve
Inventor:
James D. Shank, Jr.
Patented Case
View Patent ↗
Granted: Aug 6, 1996
Filed: Feb 7, 1995
Inventor
James D. Shank, Jr.
Assignee (at issue)
Church & Dwight Co., 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.