Granted Patent
Utility
US 4,924,977 · App. 07/227,351
Multi-stage torque converter with integrated damper
Inventors:
Steven A. Crawford, James R. Wells
Patented Case
View Patent ↗
Granted: May 15, 1990
Filed: Aug 2, 1988
Inventors
Steven A. Crawford
James R. Wells
Assignee (at issue)
Borg-Warner Automotive, 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.