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Combined selector and control valve unit for hydraulic lifting and lowering devices
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Current limiting valve
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A hydraulic system for tractors
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Damping hydraulic spring
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Hydraulic spring with almost constant elastic force
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Temperature compensated hydraulic spring
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Device for obtaining elasticity characteristics for traction and pressure movement using any springs
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Improved restricted flow passage
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Hydraulic spring for traction and shock devices
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Liquid spring and a combined drawgear and buffer gear incorporating such a spring
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Liquid spring
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Liquid springs
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Process for rolling a toothing on an annular or disk-shaped workpiece
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Temperature compensated hydraulic spring
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Improvements to self-suction centrifugal pumps
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Temperature compensated hydraulic spring
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Combined liquid and gas springs
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Adjustable pre-tension hydraulic spring
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Improvements in or relating to centrifugal oil separators
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Hydraulic spring
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