File:1917-Rosenzweig-141.jpeg

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Summary

Flying machine patents in Rosenzweig, 1917, Systematic collection of patents issued in Russia, p. 141. (VPTB.)

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current21:03, 6 February 2024Thumbnail for version as of 21:03, 6 February 2024780 × 816 (104 KB)LTA (talk | contribs)Flying machine patents in Rosenzweig, 1917, Systematic collection of patents issued in Russia, p. 141. (VPTB.)

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