Granted Patent
Utility
US 4,046,559 · App. 05/660,020
Pyrometallurgical system for liquid-liquid contacting
Inventor:
Peter B. Crimes
Patented Case
View Patent ↗
Granted: Sep 6, 1977
Filed: Feb 23, 1976
Inventor
Peter B. Crimes
Assignee (at issue)
Kennecott Copper Corporation
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.