Granted Patent
Utility
US 4,239,321 · App. 06/056,471
Contact element with interior support
Inventor:
Erhard Bauer
Patented Case
View Patent ↗
Granted: Dec 16, 1980
Filed: Jul 11, 1979
Inventor
Erhard Bauer
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.