Granted Patent
Utility
US 4,576,259 · App. 06/615,017
Torsion damping mechanism with variable damping
Inventor:
Warren G. Bopp
Patented Case
View Patent ↗
Granted: Mar 18, 1986
Filed: May 29, 1984
Inventor
Warren G. Bopp
Assignee (at issue)
Eaton 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.