Granted Patent
Utility
US 4,548,214 · App. 06/659,933
Fore-and-aft leveling mechanism for combine cleaning apparatus
Inventors:
Ronald T. Sheehan, Myles Hyman
Patented Case
View Patent ↗
Granted: Oct 22, 1985
Filed: Oct 11, 1984
Inventors
Ronald T. Sheehan
Myles Hyman
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.