Granted Patent
Utility
US 4,237,358 · App. 06/036,353
Isolation membrane switch
Inventors:
Willis A. Larson, Steven D. Vannice, Joseph Jesson
Patented Case
View Patent ↗
Granted: Dec 2, 1980
Filed: May 7, 1979
Inventors
Willis A. Larson
Steven D. Vannice
Joseph Jesson
Assignee (at issue)
Oak Industries Inc.
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.