Granted Patent
Utility
US 5,042,255 · App. 07/359,340
Master cylinder
Inventor:
Toshihiro Nakano
Patented Case
View Patent ↗
Granted: Aug 27, 1991
Filed: May 31, 1989
Inventor
Toshihiro Nakano
Assignee (at issue)
AISIN SEIKI 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.