Granted Patent
Utility
US 4,304,142 · App. 06/142,571
Operator cab tilting apparatus
Inventor:
Gary D. Blomstrom
Patented Case
View Patent ↗
Granted: Dec 8, 1981
Filed: Jan 30, 1980
Inventor
Gary D. Blomstrom
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.