Granted Patent
Utility
US 6,523,599 · App. 09/556,310
Casting furnace with centrally located heating element for producing directionally solidified castings
Inventor:
Martin Balliel
Patented Case
View Patent ↗
Granted: Feb 25, 2003
Filed: Apr 24, 2000
Inventor
Martin Balliel
Assignee (at issue)
ALSTOM (Switzerland) Ltd
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.