Granted Patent
Utility
US 4,755,639 · App. 07/114,802
Pressure switch with calibration tab
Inventor:
Abed Kahale
Patented Case
View Patent ↗
Granted: Jul 5, 1988
Filed: Oct 28, 1987
Inventor
Abed Kahale
Assignee (at issue)
Eaton 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.