Granted Patent
Utility
US 4,788,856 · App. 07/107,664
Method and apparatus for checking differential gear assemblies
Inventor:
Ned D. Felger
Patented Case
View Patent ↗
Granted: Dec 6, 1988
Filed: Oct 13, 1987
Inventor
Ned D. Felger
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.