Granted Patent
Utility
US 4,274,546 · App. 06/083,160
Condition responsive electrical switch construction and parts and methods therefor
Inventors:
Charles D. Branson, Harvey J. Shopsky
Patented Case
View Patent ↗
Granted: Jun 23, 1981
Filed: Oct 1, 1979
Inventors
Charles D. Branson
Harvey J. Shopsky
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.