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US757825.pdf (file size: 367 KB, MIME type: application/pdf)

Patent No. 757,825. “Rocket Apparatus for Taking Photographs"; granted to Alfred Maul, of Dresden, Germany.

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current22:43, 1 April 2020 (367 KB)RobertG (Talk | contribs) (Patent No. 757,825. “Rocket Apparatus for Taking Photographs"; granted to Alfred Maul, of Dresden, Germany.)

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