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GE85903.pdf (file size: 163 KB, MIME type: application/pdf)

19th century reaction engine Patent Nr. 85,903, German, Boehm, August, 10 March 1896

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current14:49, 10 June 2021 (163 KB)RobertG (Talk | contribs) (19th century reaction engine Patent Nr. 85,903, German, Boehm, August, 10 March 1896)

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