Granted Patent
Utility
US 6,667,263 · App. 09/856,218
Composite material
Inventors:
Philippe Guillo, Dale B. Hoggard
Patented Case
View Patent ↗
Granted: Dec 23, 2003
Filed: Nov 14, 2002
Inventors
Philippe Guillo
Dale B. Hoggard
Assignee (at issue)
VESUVIUS CRUCIBLE COMPANY
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.