Granted Patent
Utility
US 6,035,943 · App. 09/089,837
Frame leveling system for tillage implements
Inventors:
Mark Anthony Gerein, Ron Zwarich
Patented Case
View Patent ↗
Granted: Mar 14, 2000
Filed: Jun 3, 1998
Inventors
Mark Anthony Gerein
Ron Zwarich
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.