Granted Patent
Utility
US 5,884,648 · App. 08/920,137
Coupling valve apparatus and method
Inventor:
Chester Savage
Patented Case
View Patent ↗
Granted: Mar 23, 1999
Filed: Aug 27, 1997
Inventor
Chester Savage
Assignee (at issue)
Scholle Corporation
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.