Granted Patent
Utility
US 6,428,743 · App. 09/679,696
Trough having an erosion-resistant precast shape
Inventors:
George M. Stoupis, Jeffrey S. Chadwick, David O'Connor
Patented Case
View Patent ↗
Granted: Aug 6, 2002
Filed: Oct 5, 2000
Inventors
George M. Stoupis
Jeffrey S. Chadwick
David O'Connor
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.