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EP0016736A1
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Improvements in telescopic column structures for excavating trenches, foundations and the like
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FR2376256A1
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Clam-shell bucket for digging wells - has shells mounted on cantilever arms with stops to limit degree of opening
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DE2756594A1
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Flanged connection for concrete mast sections - has recesses in section flanges to receive plug elements and metal rods in holes
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DE2740101A1
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Borehole excavator jaw connection system - includes short inner levers below long side levers attached to yoke above
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DE2739752A1
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DOSING PUMP FOR LIME CONCRETE
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IT1117803B
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Pump for high strength dry concrete mix - has Archimedean screw feeding pneumatically operated oscillating cylinders in rotation
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IT1069206B
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Pump for high strength dry concrete mix - has Archimedean screw feeding pneumatically operated oscillating cylinders in rotation
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