Granted Patent
Utility
US 4,800,962 · App. 07/080,618
Planter hydraulic system with means for locking row markers during transport
Inventor:
David L. Murray
Patented Case
View Patent ↗
Granted: Jan 31, 1989
Filed: Aug 3, 1987
Inventor
David L. Murray
Assignee (at issue)
Deutz-Allis Corporation
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.