Granted Patent
Utility
US 5,294,046 · App. 08/023,821
Fail-open locking element and thermostat incorporation same
Inventor:
Joseph Fishman
Patented Case
View Patent ↗
Granted: Mar 15, 1994
Filed: Feb 23, 1993
Inventor
Joseph Fishman
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.