Granted Patent
Utility
US 4,544,641 · App. 06/629,547
Refractory products formed by grains bound by carbon residues and metal silicon in powder form and process for the production thereof
Inventors:
Daniel Dumas, Bruno du Mesnildot, Christian G. Michel
Patented Case
View Patent ↗
Granted: Oct 1, 1985
Filed: Jul 10, 1984
Inventors
Daniel Dumas
Bruno du Mesnildot
Christian G. Michel
Assignee (at issue)
Societe des Electrodes & Refractaires Savoie
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.