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The Appareil Dubroni No 1 or Appareil Dubroni de poche was a box camera for wet-collodion plates. It had been invented by Jules Bourdin and was produced from 1864 to 1870. "Dubroni" was a character-remix of the name Bourdin. The interior of this camera was made of glass or porcelain. For each exposure the sensitization and development process could be done in 13 steps inside the camera. Therefore the chemicals for sensitization, development and fixation had to be filled into and exhausted out of the camera with a pipette.