Granted Patent
Utility
US 4,601,679 · App. 06/734,695
Variable pulley torque drive means
Inventor:
Thomas Bock
Patented Case
View Patent ↗
Granted: Jul 22, 1986
Filed: May 16, 1985
Inventor
Thomas Bock
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.