Granted Patent
Utility
US 5,620,389 · App. 08/531,051
Parallel-axis differential
Inventor:
Hideyuki Sato
Patented Case
View Patent ↗
Granted: Apr 15, 1997
Filed: Sep 20, 1995
Inventor
Hideyuki Sato
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.