Granted Patent
Utility
US 6,240,899 · App. 09/283,963
Throttle valve device for an internal combustion engine
Inventors:
Hiroyuki Yamada, Yasuhiro Kamimura, Kenji Ono, Norihiro Isozaki
Patented Case
View Patent ↗
Granted: Jun 5, 2001
Filed: Apr 2, 1999
Inventors
Hiroyuki Yamada
Yasuhiro Kamimura
Kenji Ono
Norihiro Isozaki
Assignee (at issue)
HITACHI, LTD.
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.