Granted Patent
Utility
US 4,322,121 · App. 06/117,890
Screw-coupled electrical connectors
Inventors:
Arthur J. Riches, Robert D. Wallace
Patented Case
View Patent ↗
Granted: Mar 30, 1982
Filed: Feb 1, 1980
Inventors
Arthur J. Riches
Robert D. Wallace
Assignee (at issue)
Bunker Ramo 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.