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ES1876005397A1876-01-211876-01-21Sistema especial de elaboracion de cerillas y pajuelas fosforicas con el fosforo amorfo y exclusion del blanco.
ExpiredES5397H3
(es)
Fabricación de correas de transmisión cuya cadeneta se compone de filamentos de sustancias del reino animal, que van alternando con otros filamentos formados de sustancia vegetal.