Granted Patent
Utility
US 6,374,898 · App. 09/268,722
Process for producing a casting core, for forming within a cavity intended for cooling purposes
Inventors:
Konrad Vogeler, Bernhard Weigand, Hans Wettstein
Patented Case
View Patent ↗
Granted: Apr 23, 2002
Filed: Mar 17, 1999
Inventors
Konrad Vogeler
Bernhard Weigand
Hans Wettstein
Assignee (at issue)
ALSTOM Holdings
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.