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US59487.pdf (file size: 182 KB, MIME type: application/pdf)

Patent No. 59,487. “Improvement in War-rockets"; granted to J. J. B. Walbach, of Baltimore, Maryland.

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current22:43, 1 April 2020 (182 KB)RobertG (Talk | contribs) (Patent No. 59,487. “Improvement in War-rockets"; granted to J. J. B. Walbach, of Baltimore, Maryland.)

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