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GB637847A
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Improvements in or relating to photographic materials
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GB634951A
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Improvements in or relating to thiazolidone compounds
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GB634952A
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Improvements in or relating to merocyanine dyestuffs
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GB633735A
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Improvements in or relating to the production of methine dyestuffs and to photographic emulsions sensitised therewith
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GB633736A
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Improvements in or relating to the production of oxazolone derivatives
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GB615880A
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Improvements in or relating to silver halide photographic emulsions
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GB618894A
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Improvements in or relating to tri-heterocyclo-substituted methanes
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GB610569A
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Improvements in or relating to the production of dyes and the sensitisation of photographic emulsions
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GB607918A
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Improvements in or relating to the production of dyestuffs
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GB597446A
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Improvements in or relating to organic compounds containing sulphur
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GB595784A
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Improvements in or relating to cyanine dyestuffs
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GB604217A
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Improvements in or relating to cyanine dyestuffs and to photographic silver halide emulsions sensitised therewith
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GB595783A
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Improvements in or relating to dyestuff intermediates
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GB595785A
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Improvements in or relating to dyestuff intermediates
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GB593065A
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Improvements in or relating to colour photography
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GB585780A
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Improvements in or relating to the production of pyrazolones
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GB585781A
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Improvements in or relating to the production of azo dyestuffs
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GB583648A
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Improvements in photographic materials
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GB576890A
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Improvements in or relating to colour photography
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GB577295A
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Improvements in or relating to colour photography
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