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US1206837.pdf (file size: 910 KB, MIME type: application/pdf)

Patent No. 1,206,837. "Rocket Apparatus"; granted to Robert H. Goddard, of Worcester, Mass.

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current22:43, 1 April 2020 (910 KB)RobertG (Talk | contribs) (Patent No. 1,206,837. "Rocket Apparatus"; granted to Robert H. Goddard, of Worcester, Mass.)

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