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GB361203A
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Improvements in or relating to piles and shoes therefor
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US1847024A
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Method of filling pits
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GB300948A
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Improvements in or relating to piles and shoes therefor
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GB290702A
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An improved method of, and machine for making concrete piles to serve as foundationsof buildings, structures, and the like
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US1742423A
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Method of laying foundations of structures, buildings, and the like
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US1763485A
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Machine for laying foundations of structures
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US1609670A
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Pile or pile core
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GB241114A
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Improvements in or relating to piles and shoes therefor
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