Granted Patent
Utility
US 4,559,841 · App. 06/653,810
Gear train having an internal gear mechanism
Inventor:
Robert O. Chambers
Patented Case
View Patent ↗
Granted: Dec 24, 1985
Filed: Feb 2, 1983
Inventor
Robert O. Chambers
Assignee (at issue)
Caterpillar Tractor Co.
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.