Granted Patent
Utility
US 4,557,276 · App. 06/659,934
Four way leveling mechanism for combine cleaning apparatus
Inventors:
Myles Hyman, Ronald T. Sheehan, E. William Rowland-Hill
Patented Case
View Patent ↗
Granted: Dec 10, 1985
Filed: Oct 11, 1984
Inventors
Myles Hyman
Ronald T. Sheehan
E. William Rowland-Hill
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.