Granted Patent
Utility
US 6,609,987 · App. 09/967,723
Hydraulic timing chain tensioner assembly
Inventor:
John M. Beardmore
Patented Case
View Patent ↗
Granted: Aug 26, 2003
Filed: Oct 1, 2001
Inventor
John M. Beardmore
Assignee (at issue)
General Motors LLC
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.