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Individual
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Individual
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Priority to ES25257ApriorityCriticalpatent/ES25257A3/es
Publication of ES25257A3publicationCriticalpatent/ES25257A3/es
ES25257A1899-12-211899-12-21Un procedimiento químico para la fabricación de cera mineral llamada "Ceresina" o cera de Moldavia depurada y purificada.
ExpiredES25257A3
(es)
Perfectionnements apportés à la fabrication des tuyaux et rigoles d'écoulement principalement destinés au transport de matières abrasives ou corrosives
Procédé perfectionné pour la fabrication de produits pour l'industrie céramique et abrasive en partant de la bauxite ou d'autres terres alumineuses