Granted Patent
Utility
US 5,798,589 · App. 08/711,591
Brushless motor having lubrication system for upper and lower bearings
Inventors:
Shinichi Ohi, Fuhito Umegaki, Masami Takemasa, Tatsuo Haraguchi, Yoshihide Gunji, Hiroshi Ohsawa
Patented Case
View Patent ↗
Granted: Aug 25, 1998
Filed: Sep 10, 1996
Inventors
Shinichi Ohi
Fuhito Umegaki
Masami Takemasa
Tatsuo Haraguchi
Yoshihide Gunji
Hiroshi Ohsawa
Assignee (at issue)
Zexel GmbH
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.