Granted Patent
Utility
US 4,697,054 · App. 06/900,995
Differential pressure operated electrical switch construction and method of making the same
Inventors:
Rolf H. Ochsner, Charles J. Everett
Patented Case
View Patent ↗
Granted: Sep 29, 1987
Filed: Aug 28, 1986
Inventors
Rolf H. Ochsner
Charles J. Everett
Assignee (at issue)
ROBERTSHAW CONTROLS PRIVATE LIMITED
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.