Granted Patent
Utility
US 6,477,999 · App. 09/503,769
Vane-type hydraulic variable camshaft timing system with lockout feature
Inventor:
George L. Markley
Patented Case
View Patent ↗
Granted: Nov 12, 2002
Filed: Feb 14, 2000
Inventor
George L. Markley
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.