Granted Patent
Utility
US 6,622,784 · App. 09/829,050
Reboiler/condenser heat exchanger of the bath type
Inventor:
Benoit Davidian
Patented Case
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Granted: Sep 23, 2003
Filed: Apr 10, 2001
Inventor
Benoit Davidian
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.