Granted Patent
Utility
US 4,310,107 · App. 06/125,611
Manually operated, trigger actuated diaphragm pump dispenser
Inventor:
Walter H. Wesner
Patented Case
View Patent ↗
Granted: Jan 12, 1982
Filed: Feb 28, 1980
Inventor
Walter H. Wesner
Assignee (at issue)
AFA 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.