Granted Patent
Utility
US 6,001,039 · App. 09/012,378
Rotational speed difference sensitive type joint assembly
Inventors:
Takashi Ohkubo, Isao Ishikawa, Shinichiro Nakajima
Patented Case
View Patent ↗
Granted: Dec 14, 1999
Filed: Jan 23, 1998
Inventors
Takashi Ohkubo
Isao Ishikawa
Shinichiro Nakajima
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.