Granted Patent
Utility
US 4,616,803 · App. 06/525,655
Declutchable valve override
Inventor:
Petrus J. R. Schils
Patented Case
View Patent ↗
Granted: Oct 14, 1986
Filed: Aug 23, 1983
Inventor
Petrus J. R. Schils
Assignee (at issue)
Keystone International
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.