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Juice centrifuge
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GB1047966A
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Improvements in or relating to optical apparatus
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Device for fine adjustment of a lens, in particular a projection lens
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Improvements in or relating to slide projectors having slide magazines, and slide magazines therefor
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Improvements in or relating to slide projectors
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GB961002A
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Improvements in slide projectors
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Slide projector with slide slider
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GB922712A
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Improvements in or relating to slide projectors
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Improvements in or relating to optical slide projectors
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GB912366A
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Improvements in and relating to optical slide projectors
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Camera with built-in photocell-controlled galvanometer type exposure meter
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US1632588A
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Receptacle sterilizer
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FR454146A
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Viewfinder system suitable for mounting behind the frosted glass of stand-mounted cameras
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CA381266A
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Can and cover washing machine
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