Granted Patent
Utility
US 4,822,291 · App. 07/136,440
Gas operated electrical connector
Inventor:
Francis V. Cunningham
Patented Case
View Patent ↗
Granted: Apr 18, 1989
Filed: Dec 17, 1987
Inventor
Francis V. Cunningham
Assignee (at issue)
Joslyn 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.