Granted Patent
Utility
US 4,243,258 · App. 06/038,984
Tree harvester
Inventor:
Fred R. Dauwalder
Patented Case
View Patent ↗
Granted: Jan 6, 1981
Filed: Mar 5, 1979
Inventor
Fred R. Dauwalder
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.