Granted Patent
Utility
US 4,865,906 · App. 07/146,847
Flame retardant yard blend
Inventor:
W. Novis Smith
Patented Case
View Patent ↗
Granted: Sep 12, 1989
Filed: Jan 22, 1988
Inventor
W. Novis Smith
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.