Granted Patent
Utility
US 4,222,500 · App. 05/927,274
Non-propellant, duration spray dispenser with positive shut off valve
Inventors:
Nicholas G. Capra, Roy Hammett
Patented Case
View Patent ↗
Granted: Sep 16, 1980
Filed: Jul 24, 1978
Inventors
Nicholas G. Capra
Roy Hammett
Assignee (at issue)
James D. Pauls, Limited
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.