Granted Patent
Utility
US 4,975,086 · App. 07/410,832
Contact spring, set of contact springs and chipcard reader using said contact springs
Inventors:
Manfred Reichardt, Robert Bleier
Patented Case
View Patent ↗
Granted: Dec 4, 1990
Filed: Sep 22, 1989
Inventors
Manfred Reichardt
Robert Bleier
Assignee (at issue)
Amphenol 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.