Maruso Patent Box

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Japanese Bolta film cameras (edit)
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The Maruso Patent Box is a Japanese camera for Bolta film, made c.1949.[1] It is only known from an article in Kurashikku Kamera Senka, where it is attributed to Marusō Kōgaku.[1]


The Maruso Patent Box is a metal box camera, reportedly taking 24×35mm vertical pictures.[1] The film is loaded through the removable rear panel.[1] It is said that the camera contains a metal insert with the spool holders and exposure frame.[1] There is a metal handle at the top, also used as a frame finder and back latch. The advance knob is on the photographer's right, and has a manual exposure counter at the base. There is no red window in the back.[1]

The lens has a fixed focus and aperture.[2] The everset shutter is tripped by a lever on the right, and reportedly has B and 1/25 settings.[1] The markings on the shutter plate are hardly legible on the only picture known so far; they reportedly state that the camera was made in Occupied Japan.[1]


  1. 1.0 1.1 1.2 1.3 1.4 1.5 1.6 1.7 Takesaki, p.96 of Kurashikku Kamera Senka no.21.
  2. Takesaki, p.96 of Kurashikku Kamera Senka no.21, estimates the focal length and aperture at 77mm f/19.


The Maruso Patent Box is not listed in Kokusan kamera no rekishi or in Sugiyama.