Granted Patent
Utility
US 6,564,417 · App. 09/754,975
Cylindrical brush with locking pin
Inventor:
Joseph Porat
Patented Case
View Patent ↗
Granted: May 20, 2003
Filed: Jan 4, 2001
Inventor
Joseph Porat
Assignee (at issue)
AQUA PRODUCTS, INC.
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.