Granted Patent
Utility
US 6,662,736 · App. 10/253,365
Seed planter
Inventors:
Patrick R. Lowe, Ray H. Grumme
Patented Case
View Patent ↗
Granted: Dec 16, 2003
Filed: Sep 24, 2002
Inventors
Patrick R. Lowe
Ray H. Grumme
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.