Granted Patent
Utility
US 5,707,309 · App. 08/788,039
Hydraulic tensioner with modular inlet check valve with pressure relief
Inventor:
Roger T. Simpson
Patented Case
View Patent ↗
Granted: Jan 13, 1998
Filed: Jan 23, 1997
Inventor
Roger T. Simpson
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.