Patent for "Arc spotlights for stage lighting and other purposes" 1912, Schwabe & co (Q39991)

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Revision as of 13:04, 28 July 2026 by ChrisVG (talk | contribs) (‎Changed [de] label: Patent für "Bogenlichtscheinwerfer für Bühnenbeleuchtung und andere Zwecke. “, 1912, Schwabe & Co.)
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Patent for "Arc spotlights for stage lighting and other purposes" 1912, Schwabe & co
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