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WO2011143248A1
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Configurations for unitized post tension block system
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US2008256894A1
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Special and improved configurations for unitized post tension block systems for masonry structures
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US2008307748A1
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Special equipment and improved methods to install a unitized post tension block system for masonry structures
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CN101611202A
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Has super-strength block structured post tensioning block structure system
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EP2074267A2
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Super unitized post tension block system for high strength masonry structures - with superstrongbloks
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US2007186502A1
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Unitized post tension block system for masonry structures
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US2007107333A1
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Systems for building construction by attaching blocks with bolts and vertically spaced flat bars
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