Granted Patent
Utility
US 4,357,748 · App. 06/186,163
Fluid flow sensing switch device method of making the same
Inventors:
Charles D. Branson, Roy C. Demi
Patented Case
View Patent ↗
Granted: Nov 9, 1982
Filed: Sep 11, 1980
Inventors
Charles D. Branson
Roy C. Demi
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.