Granted Patent
Utility
US 5,249,423 · App. 07/848,938
Master cylinder
Inventors:
Kaoru Nakamura, Haruo Arakawa
Patented Case
View Patent ↗
Granted: Oct 5, 1993
Filed: Mar 10, 1992
Inventors
Kaoru Nakamura
Haruo Arakawa
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.