Granted Patent
Utility
US 4,409,450 · App. 06/402,876
Double pole membrane switch having preferred sequence closing feature
Inventor:
Brian Blades
Patented Case
View Patent ↗
Granted: Oct 11, 1983
Filed: Jul 29, 1982
Inventor
Brian Blades
Assignee (at issue)
AMP LLC
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.