Granted Patent
Utility
US 4,647,737 · App. 06/851,884
Snap-action switch for alternating current
Inventor:
Guglielmo Rossi
Patented Case
View Patent ↗
Granted: Mar 3, 1987
Filed: Apr 11, 1986
Inventor
Guglielmo Rossi
Assignee (at issue)
RANCO CO., Ltd.
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.