Granted Patent
Utility
US 4,462,270 · App. 06/056,392
Friction index modifier for damper
Inventors:
Duncan H. Cooper, Herbert W. Egan, Jr.
Patented Case
View Patent ↗
Granted: Jul 31, 1984
Filed: Jul 10, 1979
Inventors
Duncan H. Cooper
Herbert W. Egan, Jr.
Assignee (at issue)
Wallace Murray 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.