ES7663Y - Chimenea de ventilación por extractor eléctrico, con portillones de obturación, juntas de goma y contrapesos para cámaras de gases.
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Chimenea de ventilación por extractor eléctrico, con portillones de obturación, juntas de goma y contrapesos para cámaras de gases.
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CT TECNICO DE FUMIGACION CASA GRIMA
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CT TECNICO DE FUMIGACION CASA GRIMA
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Publication of ES7663YpublicationCriticalpatent/ES7663Y/es
ES0007663U1942-07-311942-07-31Chimenea de ventilación por extractor eléctrico, con portillones de obturación, juntas de goma y contrapesos para cámaras de gases.
ExpiredES7663Y
(es)
Fremgangsmaade til fremstilling af Skumglasformlegemer af Glasmel under Tilsætning af Stoffer, som ved de Temperaturer, hvorved Glasset bliver blødt afgiver Luftarter.