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US2465525A.pdf (file size: 635 KB, MIME type: application/pdf)

U.S. Patent # 2,465,525 issued to Robert Hutchings Goddard

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current15:51, 13 July 2012 (635 KB)RobertG (Talk | contribs) (U.S. Patent # 2,465,525 issued to Robert Hutchings Goddard)

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