Granted Patent
Utility
US 4,375,254 · App. 06/207,833
Clutch driven plate assembly with cushioned friction material
Inventor:
Thaddeus Lech, Jr.
Patented Case
View Patent ↗
Granted: Mar 1, 1983
Filed: Nov 17, 1980
Inventor
Thaddeus Lech, Jr.
Assignee (at issue)
BorgWarner Inc.
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.