Granted Patent
Utility
US 4,466,231 · App. 06/413,193
Automatic sieve and chaffer adjustment in a combine harvester
Inventors:
E. William Rowland-Hill, Ronald T. Sheehan
Patented Case
View Patent ↗
Granted: Aug 21, 1984
Filed: Aug 30, 1982
Inventors
E. William Rowland-Hill
Ronald T. Sheehan
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.