Granted Patent
Utility
US 6,138,404 · App. 08/936,901
Seedling growth enhancing device
Inventors:
Lawrence H. King, Joseph F. Lais
Patented Case
View Patent ↗
Granted: Oct 31, 2000
Filed: Sep 25, 1997
Inventors
Lawrence H. King
Joseph F. Lais
Assignee (at issue)
Treesentials Company
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.