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US918336.pdf (file size: 803 KB, MIME type: application/pdf)

Patent No. 918,336. “Aerial Navigation"; granted to Christopher John Lake, of Bridgeport, Conn.

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current22:43, 1 April 2020 (803 KB)RobertG (Talk | contribs) (Patent No. 918,336. “Aerial Navigation"; granted to Christopher John Lake, of Bridgeport, Conn.)

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