Granted Patent
Utility
US 4,268,729 · App. 06/071,816
Plug and receptacle interlock
Inventor:
Bronius Gaizauskas
Patented Case
View Patent ↗
Granted: May 19, 1981
Filed: Sep 4, 1979
Inventor
Bronius Gaizauskas
Assignee (at issue)
Akzona Incorporated
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.