File:Laemmerhirt pat 33515.jpg

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Deutsch: Emil Laemmerhirt: Schrauben-Stimmvorrichtung für Pianofortes. Auszug aus der Patentschrift, November 1885.
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Source Kaiserliches Patentamt. Patentschrift Nr. 33515. Ausgegeben 3. November 1885. Zweite Seite.
Author Emil Laemmerhirt

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current09:43, 26 June 2024Thumbnail for version as of 09:43, 26 June 2024622 × 841 (67 KB)Traktorminze (talk | contribs)Uploaded a work by Emil Laemmerhirt from Kaiserliches Patentamt. Patentschrift Nr. 33515. Ausgegeben 3. November 1885. Zweite Seite. with UploadWizard

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