Granted Patent
Utility
US 4,379,955 · App. 06/353,831
Sealed rotary switch
Inventor:
John Comerford
Patented Case
View Patent ↗
Granted: Apr 12, 1983
Filed: Mar 1, 1982
Inventor
John Comerford
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.