US2006179730A1
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Wall structural member and method for constructing a wall structure
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US3412562A
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Structural wall and method
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US3055073A
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Method and apparatus for the continuous production of prestressed concrete members
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Pretensioning machine for making prestressed concrete bodies
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Manufacture of concrete structures
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Method for the manufacture of concrete structures
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Apparatus for manufacturing prestressed concrete members
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Bottom discharge bucket
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Apparatus for making hollow reinforced concrete bodies
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US2912828A
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Pier construction method
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Pre-stressed concrete pile construction
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Plumbing device
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Apparatus and method for the placement of caissons
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Submarine support column
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Hollow mandrel for placement of discrete material
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Pile construction
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Tremie pipe and method
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