Granted Patent
Utility
US 4,763,377 · App. 06/921,912
Swiveling scrub brush
Inventor:
Everett Madsen
Patented Case
View Patent ↗
Granted: Aug 16, 1988
Filed: Oct 21, 1986
Inventor
Everett Madsen
Assignee (at issue)
Flo-Pac 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.