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US502168.pdf (file size: 321 KB, MIME type: application/pdf)

Patent No. 502,168. "Aerial Machine"; granted to Sumter B. Battey, of New York, N. Y.

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current22:43, 1 April 2020 (321 KB)RobertG (Talk | contribs) (Patent No. 502,168. "Aerial Machine"; granted to Sumter B. Battey, of New York, N. Y.)

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