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GB8507719D0
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Fluid control valves
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GB2071203A
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Driving mechanism for lift doors
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GB2067788A
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Lift supervisory indicator
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GB2067030A
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Electric power supply control arrangement
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GB2065978A
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Press button electrical switches
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GB1593301A
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Control systems for lift installations
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GB1542562A
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Arrangements for indicating movement of a body along a predetermined path
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GB1468910A
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Control arrangements for power operated sliding doors
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GB1320359A
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Lift control systems
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GB1271817A
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Improvements in or relating to lift control systems
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GB1276922A
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Improvements in and relating to passenger conveyors
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GB1193933A
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Improvements in or relating to Mechanisms for Power Operating Door or Gate Arrangements
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GB1180149A
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Improvements in or Relating to Escalators
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GB1089064A
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Improvements in or relating to lift control systems
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GB1059041A
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Improvements in or relating to passenger-transporting conveyors
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GB1075018A
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Improvements in or relating to logic systems
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GB1013816A
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Improvements in or relating to lift installations
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GB996761A
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Improvements in or relating to pushbutton devices
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DE1406185A1
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Control system for elevators
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GB954319A
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Improvements in or relating to lift installations
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