Granted Patent
Utility
US 4,876,475 · App. 07/187,149
Brush holder with plastic cup to retain biasing spring
Inventor:
Richard A. Smith
Patented Case
View Patent ↗
Granted: Oct 24, 1989
Filed: Apr 28, 1988
Inventor
Richard A. Smith
Assignee (at issue)
Sunbeam Corporation Limited
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.