Granted Patent
Utility
US 6,026,533 · App. 09/020,633
Rotary brush plate apparatus
Inventor:
Phillip W. Prohoroff
Patented Case
View Patent ↗
Granted: Feb 22, 2000
Filed: Feb 9, 1998
Inventor
Phillip W. Prohoroff
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.