Granted Patent
Utility
US 6,561,148 · App. 09/790,723
Variable valve mechanism of internal combustion engine
Inventors:
Katsuya Moteki, Shinichi Takemura, Yoshiaki Miyazato
Patented Case
View Patent ↗
Granted: May 13, 2003
Filed: Feb 23, 2001
Inventors
Katsuya Moteki
Shinichi Takemura
Yoshiaki Miyazato
Assignees (at issue)
Nissan Motor Co., Ltd.
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.