Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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PFALZISCHE CHAMOTTE und THONWE
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PFALZISCHE CHAMOTTE und THONWE
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Filing date
Publication date
Application filed by PFALZISCHE CHAMOTTE und THONWEfiledCriticalPFALZISCHE CHAMOTTE und THONWE
Application grantedgrantedCritical
Publication of FR673594ApublicationCriticalpatent/FR673594A/fr
F28C—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA COME INTO DIRECT CONTACT WITHOUT CHEMICAL INTERACTION