Granted Patent
Utility
US 6,502,537 · App. 10/042,257
Valve timing control device of internal combustion engine
Inventors:
Tamotsu Todo, Masahiko Watanabe
Patented Case
View Patent ↗
Granted: Jan 7, 2003
Filed: Jan 11, 2002
Inventors
Tamotsu Todo
Masahiko Watanabe
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.