Granted Patent
Utility
US 4,099,577 · App. 05/778,652
Work vehicle and ring gear bearing arrangement therefor
Inventors:
Joel M. Beckham, Gene B. Easterling, Reginald K. Ringel, Egon E. Wolff
Patented Case
View Patent ↗
Granted: Jul 11, 1978
Filed: Mar 17, 1977
Inventors
Joel M. Beckham
Gene B. Easterling
Reginald K. Ringel
Egon E. Wolff
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.