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GE79446.pdf (file size: 602 KB, MIME type: application/pdf)

19th century reaction engine Patent Nr. 79,446, Gaebert, F., German of 11 Feb 1895

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current14:49, 10 June 2021 (602 KB)RobertG (Talk | contribs) (19th century reaction engine Patent Nr. 79,446, Gaebert, F., German of 11 Feb 1895)

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