Granted Patent
Utility
US 4,406,935 · App. 06/331,123
Door jamb switch
Inventors:
John H. Montag, Gary B. Zulauf
Patented Case
View Patent ↗
Granted: Sep 27, 1983
Filed: Dec 15, 1981
Inventors
John H. Montag
Gary B. Zulauf
Assignee (at issue)
Gulf Eastern Manufacturing 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.