Granted Patent
Utility
US 4,561,781 · App. 06/615,617
Agricultural feed blending apparatus
Inventor:
Shaun A. Seymour
Patented Case
View Patent ↗
Granted: Dec 31, 1985
Filed: May 31, 1984
Inventor
Shaun A. Seymour
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.