Granted Patent
Utility
US 4,988,311 · App. 07/447,299
Terminal blocks
Inventor:
Charles Tanzola
Patented Case
View Patent ↗
Granted: Jan 29, 1991
Filed: Dec 7, 1989
Inventor
Charles Tanzola
Assignee (at issue)
AT&T Bell Laboratories
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.