Granted Patent
Utility
US 4,174,052 · App. 05/862,551
Mechanically operated dispensing device with expansible bulb
Inventors:
Nicholas G. Capra, Roy Hammett
Patented Case
View Patent ↗
Granted: Nov 13, 1979
Filed: Dec 20, 1977
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.