Granted Patent
Utility
US 5,176,591 · App. 07/810,696
Planetary gear differential with disconnect
Inventor:
James A. Krisher
Patented Case
View Patent ↗
Granted: Jan 5, 1993
Filed: Dec 19, 1991
Inventor
James A. Krisher
Assignee (at issue)
DANA LIMITED
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.