Granted Patent
Utility
US 6,007,891 · App. 08/877,617
Message board eraser, eraser holder and attaching mechanism
Inventors:
Bradley C. Davis, Michael K. Boone
Patented Case
View Patent ↗
Granted: Dec 28, 1999
Filed: Jun 17, 1997
Inventors
Bradley C. Davis
Michael K. Boone
Assignee (at issue)
Boone International, 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.