Granted Patent
Utility
US 5,123,348 · App. 07/626,522
Clutch and brake mechanism for franking machine employing electro-rheological fluid
Inventor:
Walter Herbert Henson
Patented Case
View Patent ↗
Granted: Jun 23, 1992
Filed: Dec 12, 1990
Inventor
Walter Herbert Henson
Assignee (at issue)
Alcatel Business Systems
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.