Granted Patent
Utility
US 4,971,568 · App. 07/448,228
Electrical connector with attachment for automatically shorting select conductors upon disconnection of connector
Inventor:
David Cronin
Patented Case
View Patent ↗
Granted: Nov 20, 1990
Filed: Dec 11, 1989
Inventor
David Cronin
Assignee (at issue)
Polaroid 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.