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US2715038A
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Vacuum handling apparatus
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Vibrator
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Handling apparatus
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Method of molding concrete structures
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Handling apparatus
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Expansible molding core
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Concrete molding apparatus
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Molding apparatus
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Method and apparatus for molding concrete
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Method of molding prestressed structures
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Method of molding joints between spaced structural members
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Method and apparatus for molding reinforced concrete products
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Vacuum mold for molding concrete and the like
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Apparatus and method for utilizing vacuum in molding plastic material, such as concrete
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Handling apparatus
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Reinforced concrete
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Building construction
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