Granted Patent
Utility
US 4,024,796 · App. 05/616,211
Float control electrical circuit for a blade
Inventor:
Michael Theobald
Patented Case
View Patent ↗
Granted: May 24, 1977
Filed: Sep 24, 1975
Inventor
Michael Theobald
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.