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US3353557A
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Distributor valve
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US3236571A
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Friction surfaces
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US3087307A
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Hydraulic circuits
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US3050036A
|
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Servo control system to ensure the rotation of a turning mass
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US3143179A
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Automatic control means used in the filling of containers
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US3073331A
|
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Unloading valve for a hydraulic pressure circuit
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US3025879A
|
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Hydro-electric servo mechanisms
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US3016883A
|
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Hydro-electric servo mechanisms
|
|
US3015310A
|
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Hollow piston jack and control valve
|
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US3015313A
|
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Servo-controls
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US2855794A
|
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Automatic control of gearboxes and the like
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US2868217A
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Double circuit hydraulic distributor
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