Granted Patent
Utility
US 6,502,535 · App. 09/880,838
Valve timing and lift control system
Inventor:
Makoto Nakamura
Patented Case
View Patent ↗
Granted: Jan 7, 2003
Filed: Jun 15, 2001
Inventor
Makoto Nakamura
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.