Granted Patent
Utility
US 4,542,946 · App. 06/474,359
Power safety lock system
Inventor:
Howard Snow
Patented Case
View Patent ↗
Granted: Sep 24, 1985
Filed: Mar 11, 1983
Inventor
Howard Snow
Assignee (at issue)
Brand-Rex Company
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.