Granted Patent
Utility
US 4,689,953 · App. 06/896,375
Variable rate drive strap
Inventor:
Ting M. Wang
Patented Case
View Patent ↗
Granted: Sep 1, 1987
Filed: Aug 14, 1986
Inventor
Ting M. Wang
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.