Granted Patent
Utility
US 4,924,796 · App. 07/180,339
Replaceable inflation valve
Inventor:
Keith J. Duffy
Patented Case
View Patent ↗
Granted: May 15, 1990
Filed: Apr 11, 1988
Inventor
Keith J. Duffy
Assignee (at issue)
Nelson A. Taylor 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.