Granted Patent
Utility
US 4,425,825 · App. 06/262,961
Geared input mechanism for a torque converter
Inventors:
Robert O. Chambers, Marion E. Ogden
Patented Case
View Patent ↗
Granted: Jan 17, 1984
Filed: May 12, 1980
Inventors
Robert O. Chambers
Marion E. Ogden
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.