Granted Patent
Utility
US 4,936,898 · App. 06/849,745
Atomized elemental moss killer
Inventor:
James W. Nielsen
Patented Case
View Patent ↗
Granted: Jun 26, 1990
Filed: Apr 9, 1986
Inventor
James W. Nielsen
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.