Granted Patent
Utility
US 6,755,018 · App. 10/204,991
Leakage oil return apparatus for a hydraulic motor
Inventor:
Markku Jonninen
Patented Case
View Patent ↗
Granted: Jun 29, 2004
Filed: Aug 26, 2002
Inventor
Markku Jonninen
Assignee (at issue)
Ideachip Oy
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.