Maruso Patent Box
The Maruso Patent Box is a Japanese camera for Bolta film, made c.1949. It is only known from an article in Kurashikku Kamera Senka, where it is attributed to Marusō Kōgaku.
The Maruso Patent Box is a metal box camera, reportedly taking 24×35mm vertical pictures. The film is loaded through the removable rear panel. It is said that the camera contains a metal insert with the spool holders and exposure frame. 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.
The lens has a fixed focus and aperture. The everset shutter is tripped by a lever on the right, and reportedly has B and 1/25 settings. 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.
- Takesaki Harutoshi (竹崎春年). "Boruta-han kamera no subete [katarogu]" (ボルタ判カメラのすべて[カタログ], All Bolta-size cameras [catalogue]). In Kamera Rebyū: Kurashikku Kamera Senka (カメラレビュー クラシックカメラ専科) / Camera Review: All about Historical Cameras no.21, June 1992. No ISBN number. Kurashikku kamera daikenkyū (クラシックカメラ大研究, studies on classic cameras). Pp.95–105.
The Maruso Patent Box is not listed in Kokusan kamera no rekishi or in Sugiyama.