Granted Patent
Utility
US 4,565,035 · App. 06/600,731
Impeller even discharge apparatus
Inventors:
James H. Carpenter, Ronald L. Mullins
Patented Case
View Patent ↗
Granted: Jan 21, 1986
Filed: Apr 19, 1984
Inventors
James H. Carpenter
Ronald L. Mullins
Assignee (at issue)
Kennecott Holdings Company
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.