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ES364219A1
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Valve system for hydraulic mines. (Machine-translation by Google Translate, not legally binding)
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DE1089709B
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Multi-part hydraulic support element for underground mining
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US2953343A
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Two-part mine prop
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US2973178A
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Two-part metallic mine prop
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DE1099484B
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Clamping ring for a two-part support element, especially a pit punch
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DE1129439B
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Flexible support body for the pit construction
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DE1102681B
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Multi-part support element for excavation work
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DE1105820B
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Two-part ring for clamping a cylinder
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DE1108157B
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Pressure medium space for elements of the pit lining
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DE1114764B
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Swiveling cap connection for longwall mining
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DE1133328B
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Two-part pit stamp
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DE1010478B
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Profile or partial profile for the pit lining
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DE1000315B
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Multi-part hydraulic support element for excavation work
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DE1009137B
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Hydraulic pit ram with tubular inner and outer part
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DE976785C
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Device for measuring the load that the multi-part construction elements in use, in particular pit punches, are able to absorb to a maximum
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DE1010477B
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Two-part pit stamp
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DE1029778B
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Two-part pit stamp
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US2744717A
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Lock for metallic mine props
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DE906085C
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Pit stamp
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DE912082C
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Two-part pit stamp
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