Granted Patent
Utility
US 4,807,729 · App. 07/119,001
Brake roller retainer
Inventor:
Ernest C. Sampson
Patented Case
View Patent ↗
Granted: Feb 28, 1989
Filed: Nov 9, 1987
Inventor
Ernest C. Sampson
Assignee (at issue)
Eaton 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.