Granted Patent
Utility
US 4,208,643 · App. 05/912,220
Magnetically actuated mercury switch
Inventors:
Alvin A. Snaper, Gary B. Zulauf
Patented Case
View Patent ↗
Granted: Jun 17, 1980
Filed: Jun 5, 1978
Inventors
Alvin A. Snaper
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.