Difference between revisions of "Device for the illumination of stages. Addition to patent 280500 Von Salzmann (Q22948)"

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(‎Changed [en] label: Device for the illumination of stages. Addition to patent 280500 Von Salzmann)
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Revision as of 08:26, 13 March 2025

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Device for the illumination of stages. Addition to patent 280500 Von Salzmann
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    17 May 1914Gregorian
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