Granted Patent
Utility
US 4,934,495 · App. 07/330,003
Lock-up clutch for four element torque converter
Inventor:
Robert W. Lemon
Patented Case
View Patent ↗
Granted: Jun 19, 1990
Filed: Mar 29, 1989
Inventor
Robert W. Lemon
Assignee (at issue)
Rockwell International 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.