Granted Patent
Utility
US 4,698,955 · App. 06/830,030
Bale density control system for round balers
Inventor:
Robert A. Wagstaff
Patented Case
View Patent ↗
Granted: Oct 13, 1987
Filed: Feb 18, 1986
Inventor
Robert A. Wagstaff
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.