Granted Patent
Utility
US 4,663,505 · App. 06/866,115
Interlock switch base plate assembly
Inventor:
George Michael Drake
Patented Case
View Patent ↗
Granted: May 5, 1987
Filed: May 22, 1986
Inventor
George Michael Drake
Assignee (at issue)
Litton Systems, 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.