Granted Patent
Utility
US 4,301,997 · App. 05/921,038
Continuous copper melting furnace
Inventors:
Milton E. Berry, Ronald L. Pariani
Patented Case
View Patent ↗
Granted: Nov 24, 1981
Filed: Jun 30, 1978
Inventors
Milton E. Berry
Ronald L. Pariani
Assignee (at issue)
Southwire Company, LLC
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.