Seitō
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Seitō Kōgaku Kenkyūjo (誠東光学研究所) was a Japanese camera maker based in Tokyo.[1] It announced the Seito Ref in late 1940 but it is not known if the camera was actually sold.
- ↑ Its address in 1940 was Tōkyō-shi Takinogawa-ku Kaminakazato 510 (東京市瀧野川区上中里五一〇). Source: advertisement reproduced in Kokusan kamera no rekishi, p. 77.