Granted Patent
Utility
US 3,985,210 · App. 05/550,322
Automatically engaged emergency parking brake
Inventors:
Norman J. Hodge, John W. Bridwell
Patented Case
View Patent ↗
Granted: Oct 12, 1976
Filed: Feb 18, 1975
Inventors
Norman J. Hodge
John W. Bridwell
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.