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Object remote control device
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Method of automatic control of mining cutter-loader motion
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Device for control and stabilization of main motor load
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Apparatus for controlling mine power roof support unit
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Pressure relay
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Gray-to-positional code converter
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Apparatus for programme control of the working member of coal-winning machine
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Pneumatic control device
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Frequency-modulated signal discriminator
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Emergency warning device
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Spark-safe a-c supply source
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Multi-positional switch
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Spark-proof power supply source
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Spark protecting device
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Remote control device
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Pneumatic actuator correcting device
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Number comparing device
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Remote control device
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Hydraulic control system of power roof support units
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Quick-detachable joint
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