Granted Patent
Utility
US 6,270,717 · App. 09/034,337
Molten metal filtration and distribution device and method for manufacturing the same
Inventors:
Sylvain Tremblay, Rejean Dault, Pierre Legast, Pierre Delvaux
Patented Case
View Patent ↗
Granted: Aug 7, 2001
Filed: Mar 4, 1998
Inventors
Sylvain Tremblay
Rejean Dault
Pierre Legast
Pierre Delvaux
Assignee (at issue)
Les Produits Industriels De Haute Temperature Pyrotek Inc.
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.