Granted Patent
Utility
US 4,278,011 · App. 05/943,564
Automatic hydraulic shut-off system
Inventor:
Donald J. Parquet
Patented Case
View Patent ↗
Granted: Jul 14, 1981
Filed: Sep 18, 1978
Inventor
Donald J. Parquet
Assignee (at issue)
J. I. Case Company
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.