ES207694A1 - Un procedimiento fotográfico para la obtención directa de un positivo visible sin ser sometido a transparencia sobre placa de cristal o película
- Google Patents
Un procedimiento fotográfico para la obtención directa de un positivo visible sin ser sometido a transparencia sobre placa de cristal o película
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Coyne Buil Manuel
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Coyne Buil Manuel
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Priority to ES207694ApriorityCriticalpatent/ES207694A1/es
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ES207694A1953-02-111953-02-11Un procedimiento fotográfico para la obtención directa de un positivo visible sin ser sometido a transparencia sobre placa de cristal o película
ExpiredES207694A1
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