Granted Patent
Utility
US 6,395,221 · App. 09/533,097
Tilting rotary furnace system for recovery of non-ferrous metals from scrap or dross and method of operation
Inventor:
Moshe Yerushalmi
Patented Case
View Patent ↗
Granted: May 28, 2002
Filed: Mar 23, 2000
Inventor
Moshe Yerushalmi
Assignee (at issue)
MDY Engineering 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.