Granted Patent
Utility
US 5,913,293 · App. 09/069,859
Oil passage structure for engine
Inventor:
Hiroaki Ochiai
Patented Case
View Patent ↗
Granted: Jun 22, 1999
Filed: Apr 30, 1998
Inventor
Hiroaki Ochiai
Assignee (at issue)
MITSUBISHI JIDOSHA KOGYO KABUSHIKI KAISHA
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.