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

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Revision as of 14:38, 25 July 2023 by ChrisVG (talk | contribs) (‎Changed [en] label: Device for the illumination of stages. Addition to patent 280500 Von Salzmann)

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Device for the illumination of stages. Addition to patent 280500 Von Salzmann
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