Granted Patent
Utility
US 4,433,777 · App. 06/333,594
Conveyor belt drive sprocket
Inventor:
Neal W. Densmore
Patented Case
View Patent ↗
Granted: Feb 28, 1984
Filed: Dec 23, 1981
Inventor
Neal W. Densmore
Assignee (at issue)
Joy Manufacturing 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.