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FR1542103A
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Electro-hydraulic servovalves having part of the electrical section isolated from the hydraulic fluid
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FR1402736A
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Control system for control devices
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CA609964A
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Valve
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CA840176A
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Electro-hydraulic servo valve
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CA543458A
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Servo motor assembly for nose wheel steering gear and the like
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CA744555A
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Transfer valve
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CA576579A
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Four-way, solenoid actuated, fluid operated valve
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CA576620A
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Locking, damping and rate control means for fluid pressure servo systems
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CA784509A
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Control system for hydraulic actuator
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CA585519A
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Valve control linkage
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CA765622A
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Control system for hydraulic actuator
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CA646999A
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Transfer valve
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CA622272A
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Sealing means
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