Granted Patent
Utility
US 4,023,364 · App. 05/706,346
Swing flow supplemental travel for an excavator
Inventor:
Donald L. Bianchetta
Patented Case
View Patent ↗
Granted: May 17, 1977
Filed: Jul 19, 1976
Inventor
Donald L. Bianchetta
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.