Granted Patent
Utility
US 4,282,971 · App. 06/082,370
Conveyor belt chain and method for its use
Inventor:
Harry R. Becker
Patented Case
View Patent ↗
Granted: Aug 11, 1981
Filed: Oct 5, 1979
Inventor
Harry R. Becker
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.