Granted Patent
Utility
US 6,269,887 · App. 09/737,801
Forward folding tillage implement with secondary hitch
Inventor:
Terrance A. Friggstad
Patented Case
View Patent ↗
Granted: Aug 7, 2001
Filed: Dec 18, 2000
Inventor
Terrance A. Friggstad
Assignee (at issue)
Flexi-Coil Ltd.
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.