ES99841A2 - Un procedimiento perfeccionado para el blanqueo o extracción de los tintes de fibras artificiales, películas y sus similares.
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Un procedimiento perfeccionado para el blanqueo o extracción de los tintes de fibras artificiales, películas y sus similares.
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ES99841A1926-10-091926-10-09Un procedimiento perfeccionado para el blanqueo o extracción de los tintes de fibras artificiales, películas y sus similares.
ExpiredES99841A2
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