Granted Patent
Utility
US 5,015,808 · App. 07/454,880
Normally open pressure switch
Inventors:
David A. Czarn, Aziz Rahman, Alan M. Sadler, Gary A. Baker
Patented Case
View Patent ↗
Granted: May 14, 1991
Filed: Dec 22, 1989
Inventors
David A. Czarn
Aziz Rahman
Alan M. Sadler
Gary A. Baker
Assignee (at issue)
Texas Instruments Incorporated
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.