Granted Patent
Utility
US 4,420,853 · App. 06/324,748
Scrub brush
Inventors:
Thomas H. Gilman, Frank N. Miller
Patented Case
View Patent ↗
Granted: Dec 20, 1983
Filed: Nov 25, 1981
Inventors
Thomas H. Gilman
Frank N. Miller
Assignee (at issue)
The Kendall Company LP
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.