Granted Patent
Utility
US 6,405,758 · App. 09/597,417
Valve driving apparatus
Inventor:
Tetsuhiko Hara
Patented Case
View Patent ↗
Granted: Jun 18, 2002
Filed: Jun 19, 2000
Inventor
Tetsuhiko Hara
Assignee (at issue)
Kabushiki Kaisha Sankyo Seiki Seisakusho
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.