Granted Patent
Utility
US 3,995,774 · App. 05/612,926
Liquid dispenser having deformable diaphragm type pump
Inventors:
Rex C. Cooprider, Richard P. Grogan
Patented Case
View Patent ↗
Granted: Dec 7, 1976
Filed: Sep 12, 1975
Inventors
Rex C. Cooprider
Richard P. Grogan
Assignee (at issue)
Diamond International 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.