Granted Patent
Utility
US 5,135,810 · App. 07/667,792
Method of machining and structure of machined pinion gear
Inventors:
Roland C. Smith, James Steven Fisher
Patented Case
View Patent ↗
Granted: Aug 4, 1992
Filed: Mar 11, 1991
Inventors
Roland C. Smith
James Steven Fisher
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.