Granted Patent
Utility
US 4,240,686 · App. 06/027,922
Triplex receptacle
Inventor:
Peter A. Kurbikoff
Patented Case
View Patent ↗
Granted: Dec 23, 1980
Filed: Apr 6, 1979
Inventor
Peter A. Kurbikoff
Assignee (at issue)
Federal Signal Corporation
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.