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GB190713835A
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Improvements in or relating to Printing Out Papers and Photographic Sensitive Surfaces for use in the Production of Positive Pictures.
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US976810A
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Apparatus for developing photographic films.
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US917310A
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Self-developing photographic surface.
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US935156A
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Photographic developer.
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US916325A
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Photographic-film-roll spool.
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GB190525857A
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An Improved Method of and Apparatus for Developing Photographic "Roll Films".
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US935115A
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Photographic developer.
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GB190517553A
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Improvements relating to Devices for Transferring and Developing Films or Plates in connection with Photographic Cameras.
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GB190510394A
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Improvements in and relating to Roll-film Photography
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GB190508911A
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Improvements in and relating to the Preparation and Development of Photographic Plates, Films and the like.
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GB190503164A
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Improvements relating to the Development of Photographic Plates, Films and the like.
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GB190503165A
|
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Improvements relating to Photographic Roller Slides
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GB190426066A
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Improvements relating to Photographic Dry Plates, Films, or the like
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