Granted Patent
Utility
US 4,278,155 · App. 06/089,113
Draw works transmission control
Inventors:
Kenneth F. Golan, James E. Winzeler
Patented Case
View Patent ↗
Granted: Jul 14, 1981
Filed: May 2, 1979
Inventors
Kenneth F. Golan
James E. Winzeler
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.