Granted Patent
Utility
US 6,520,132 · App. 10/114,063
Valve timing control system of internal combustion engine
Inventor:
Tamotsu Todo
Patented Case
View Patent ↗
Granted: Feb 18, 2003
Filed: Apr 3, 2002
Inventor
Tamotsu Todo
Assignee (at issue)
Unisia Jecs Corporation
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.