Granted Patent
Utility
US 6,318,366 · App. 09/405,419
Supply valve and diaphragm for a pneumatically-operated gas demand apparatus
Inventor:
James M. Davenport
Patented Case
View Patent ↗
Granted: Nov 20, 2001
Filed: Sep 22, 1999
Inventor
James M. Davenport
Assignee (at issue)
Salter Labs
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.