GB0922041D0
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Improvements in or relating to aperture closure arrangements
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GB0904902D0
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Aperture closure arrangements
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GB0812556D0
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Improvements in or relating to aperture closure arrangements
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GB0811252D0
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Drive arrangement
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GB0800695D0
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Drive arrangement
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GB0706702D0
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Proximity sensing
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GB0706247D0
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Drive arrangement
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GB0704145D0
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Aperture closure apparatus
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GB0703904D0
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Control circuit
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GB0608974D0
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Drive arrangement
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GB0608973D0
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Aperture closure member control arrangements
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GB0406359D0
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Drive arrangement
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GB0306390D0
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Control and monitoring arrangements
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GB0111252D0
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Drive arrangement
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GB0110634D0
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Monitoring apparatus
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GB0107354D0
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Control arrangement
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GB9920620D0
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Current sensing
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GB9818070D0
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Aperture closures
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GB9319870D0
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Monitoring apparatus
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GB9319760D0
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Monitoring apparatus
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