Granted Patent
Utility
US 4,466,558 · App. 06/407,846
Aerator control arrangement
Inventors:
Richard H. Dugge, Dallas W. Rollins
Patented Case
View Patent ↗
Granted: Aug 21, 1984
Filed: Aug 2, 1982
Inventors
Richard H. Dugge
Dallas W. Rollins
Assignee (at issue)
ACF Industries Incorporated
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.