Granted Patent
Utility
US 6,732,686 · App. 09/890,150
Valve opening mechanism
Inventors:
Yoshihide Maeda, Hisaki Torisaka, Zdenek S. Meistrick
Patented Case
View Patent ↗
Granted: May 11, 2004
Filed: Aug 31, 2001
Inventors
Yoshihide Maeda
Hisaki Torisaka
Zdenek S. Meistrick
Assignee (at issue)
Diesel Engine Retarders, Inc.
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.