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HANDEL MIJ H ALBERT DE BARY MI
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HANDEL MIJ H ALBERT DE BARY MI
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Application filed by HANDEL MIJ H ALBERT DE BARY MIfiledCriticalHANDEL MIJ H ALBERT DE BARY MI
Application grantedgrantedCritical
Publication of FR523075ApublicationCriticalpatent/FR523075A/fr
F28G—CLEANING OF INTERNAL OR EXTERNAL SURFACES OF HEAT-EXCHANGE OR HEAT-TRANSFER CONDUITS, e.g. WATER TUBES OR BOILERS
F28G9/00—Cleaning by flushing or washing, e.g. with chemical solvents
FR523075A1920-08-261920-08-26Procédé et appareil pour nettoyer les tubes de condenseurs tubulaires, de réchauffeurs d'alimentation, etc.
ExpiredFR523075A
(fr)
Procédé pour fabriquer la 1, 3-diamino-2-hydroxy-anthraquinone en partant de l'acide 4'-hydroxy-ortho-benzoyl-benzoïque et les produits intermédiaires