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Soc Des Inventions Jan Szczepanik Et Cie
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Soc Des Inventions Jan Szczepanik Et Cie
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Un procedimiento mecánico para la confección por medio de la fotografía de patrones metálicos para máquinas tejedoras movidas por medio de fuerza eléctrica.
Un procedimiento para la producción de nuevas preparaciones sensibles o a la luz destinadas a la fotografía así como a imágenes fijas a la luz por medio de estas preparaciones.