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Udagawa Seisakusho (宇田川製作所) was a Japanese company based in Tokyo, Nakano in 1943.[1] It is listed in the "Kokusan shashinki no genjōchōsa" ("Inquiry into Japanese cameras") but the exact nature of its activity is unknown.

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  1. Its address in 1943 was Tōkyō-to Nakano-ku Sakaemachi 1–7 (東京都中野区栄町1–7). Source: "Kokusan shashinki no genjōchōsa" ("Inquiry into Japanese cameras"), listing the Japanese camera production as of April 1943.

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