Granted Patent
Utility
US 4,559,770 · App. 06/594,002
Round baler with dual function finger drum
Inventor:
Aquila D. Mast
Patented Case
View Patent ↗
Granted: Dec 24, 1985
Filed: Mar 27, 1984
Inventor
Aquila D. Mast
Assignee (at issue)
Sperry Corp.
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.