Granted Patent
Utility
US 4,759,740 · App. 07/032,815
Dual engaging silent chain drive
Inventor:
Kevin M. Cradduck
Patented Case
View Patent ↗
Granted: Jul 26, 1988
Filed: Apr 1, 1987
Inventor
Kevin M. Cradduck
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.