Granted Patent
Utility
US 4,577,366 · App. 06/620,149
Vacuum cleaner nozzle having rotating brush
Inventors:
Jonathan Miller, Robert C. Berfield, Robert L. Crevling, Jr.
Patented Case
View Patent ↗
Granted: Mar 25, 1986
Filed: Jun 13, 1984
Inventors
Jonathan Miller
Robert C. Berfield
Robert L. Crevling, Jr.
Assignee (at issue)
SHOP VAC 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.