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Application filed by Kamillo Dr. Derffinger, Βalthasar Karl Dr.filedCriticalKamillo Dr. Derffinger
Priority to GR300102739ApriorityCriticalpatent/GR2739B/el
Publication of GR2739BpublicationCriticalpatent/GR2739B/el
GR300102739A1930-03-051930-03-05Μεθοδος και κατασκευη τσιμεντου πορτλανδης εξ ακατεργαστων υλικων περιεχοντων μαγνησιαν ως π.χ. τεφραν υψηλων καμινων.
GR2739B
(el)