Granted Patent
Utility
US 4,133,392 · App. 05/837,965
Cushion link and hydraulic stabilizer for bulldozer blade
Inventor:
Gary P. Freese
Patented Case
View Patent ↗
Granted: Jan 9, 1979
Filed: Sep 29, 1977
Inventor
Gary P. Freese
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.