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GE82904.pdf (file size: 197 KB, MIME type: application/pdf)

19th century reaction engine Patent Nr. 82,904, German, Gaebert, F., 19 Sept 1895

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current14:49, 10 June 2021 (197 KB)RobertG (Talk | contribs) (19th century reaction engine Patent Nr. 82,904, German, Gaebert, F., 19 Sept 1895)

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