Granted Patent
Utility
US 4,337,781 · App. 06/135,980
Roller support for cage sweep mechanism
Inventor:
Charles F. Brundage
Patented Case
View Patent ↗
Granted: Jul 6, 1982
Filed: Mar 31, 1980
Inventor
Charles F. Brundage
Assignee (at issue)
Allis-Chalmers Corporation
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.