Granted Patent
Utility
US 6,655,419 · App. 09/959,289
Method for conditioning a liquid in receptacle fitted with a positive pressure valve
Inventor:
Joachim Grundmann
Patented Case
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Granted: Dec 2, 2003
Filed: Oct 19, 2001
Inventor
Joachim Grundmann
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.