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ES73876A1920-05-281920-05-28Un procedimiento de preparación y de baños de hilatura para la fabricación de fibras muy finas de seda de viscosa.
ExpiredES73876A1
(es)
Un procedimiento de fabricación de hebras muy finas de seda de viscosa, con arreglo al procedimiento de estirado por medio de orificios relativamente grandes y de viscosa consistente.