Granted Patent
Utility
US 6,395,138 · App. 09/554,584
Liquid dispenser for distilling column, and corresponding distilling column
Inventors:
Bernard Darredeau, Jean-Yves Lehman
Patented Case
View Patent ↗
Granted: May 28, 2002
Filed: May 17, 2000
Inventors
Bernard Darredeau
Jean-Yves Lehman
Assignee (at issue)
L'Air Liquide, Société Anonyme à Directoire et Conseil de Surveillance pour l'Étude et l'Exploitation des Procédés Georges Claude
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.