Granted Patent
Utility
US 6,049,560 · App. 09/205,146
Inductively heated side drain for high temperature molten materials
Inventor:
Charles Freeman
Patented Case
View Patent ↗
Granted: Apr 11, 2000
Filed: Dec 3, 1998
Inventor
Charles Freeman
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.