Granted Patent
Utility
US 6,672,055 · App. 09/869,924
Hydraulic pump control device
Inventors:
Hideo Konishi, Kenji Arai, Seiichi Akiyama, Masumi Nomura
Patented Case
View Patent ↗
Granted: Jan 6, 2004
Filed: Jul 9, 2001
Inventors
Hideo Konishi
Kenji Arai
Seiichi Akiyama
Masumi Nomura
Assignee (at issue)
Shin Caterpillar Mitsubishi 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.