Granted Patent
Utility
US 4,885,474 · App. 07/323,673
Connector assembly for plug-in energization and battery activation of an associated electrical apparatus
Inventors:
Robert M. Johnstone, Joseph S. Wegrzyn
Patented Case
View Patent ↗
Granted: Dec 5, 1989
Filed: Mar 15, 1989
Inventors
Robert M. Johnstone
Joseph S. Wegrzyn
Assignee (at issue)
Dual-Lite 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.