Granted Patent
Utility
US 4,256,973 · App. 05/951,200
Pressure switch and circuit means
Inventors:
Aloysius J. Kochanski, Frank D. Mowery, Charles J. Hire
Patented Case
View Patent ↗
Granted: Mar 17, 1981
Filed: Oct 13, 1978
Inventors
Aloysius J. Kochanski
Frank D. Mowery
Charles J. Hire
Assignee (at issue)
Hi-Stat Manufacturing Company, Inc.
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.