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GB949590A
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Photo-copying machines
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GB761014A
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Improvements in and relating to light-sensitive photographic silver halide emulsions
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GB716546A
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Improvements in and relating to photographic reproduction cloth
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GB680645A
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Improvements in and relating to photographic ammonia developing apparatus
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GB687936A
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Apparatus for the construction of perspective drawings
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GB665307A
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Improvements in and relating to photographic contact printing machines
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GB653580A
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Improvements in and relating to photographic contact printing apparatus
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GB653122A
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Improvements in and relating to couplings for shafts angularly disposed to one another
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GB638818A
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Improvements in and relating to tracing and like drawing frames or tables
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GB623700A
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Improvements in and relating to apparatus for detachably mounting flexible materials on hard surfaces
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GB621763A
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Improvements in and relating to lamp arms and lamp brackets for photographic contactprinting machines
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GB598921A
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Improvements in and relating to apparatus for developing photographic prints
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GB563579A
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Improvements in and relating to photographic developing machines
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GB562666A
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Improvements in photographic light-sensitive material
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GB420901A
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Improvements in and relating to developers and intensifiers for ferro prussiate or blue prints
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GB418369A
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Improvements in and relating to the manufacture of sensitized photographic printing paper and cloths
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GB418976A
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Improvements in and relating to the treatment of papers and fabrics for use in photographic printing
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GB387781A
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Improvements in and relating to apparatus for performing developing and like operations on photographic prints
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GB360067A
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Improvements in and relating to machines used in photo print developing and treating
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GB324508A
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Improvements in or relating to photographic print develophing machines
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