Granted Patent
Utility
US 6,793,429 · App. 09/911,891
Chalk holding device
Inventor:
William Q. Arrison
Patented Case
View Patent ↗
Granted: Sep 21, 2004
Filed: Jul 24, 2001
Inventor
William Q. Arrison
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.