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Apparatus for working on a workpiece while moving
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Servoactuator
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Method of making bushing for a precision hydraulic servo mechanism
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Flow control servo valve with dynamic load pressure feedback
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Improvements in or relating to electrically operated servo valves
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Servo valve producing output differential pressure independent of flow rate
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Dual input servo valve
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Electro-hydraulic servo valve with pressure repeating power amplification
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Fluid control valve in which a mechanical motion is transmitted from a dry region to a pressurized fluid filled region
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Valve bushing
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