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Procedure for the manufacture of building blocks with surface layers of hard concrete and a core of aerated concrete
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Precast concrete building slab
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Process for the production of concrete structures and structures thus manufactured
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Precast prestressed concrete floor
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prefabricated element for floors and similar structures
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Cement
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Reconstituted granite slabs, coverings and concrete blocks
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Composite tile for construction and decoration
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Methods and devices for the manufacture of prestressed concrete structural members
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Improvements in machines for the manufacture of tiles, slabs, concrete blocks and the like
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Process forthe manufacture of patterned concrete slabs
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NEW WAY OF PRODUCTION OF PORTLAND CEMENT AND OTHERS BASED ON THE FORMATION OF A CERTAIN STRUCTURE OF TONMORIA.
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Precast elements for the composite formation of shutters and other types of construction
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Shuttering for use in building concrete structures
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MANUFACTURE OF MOSAIC CEMENT STONES OF MULTIPLE SHAPES AND VARIOUS COLORS WITH TWO FACADES.
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Precast brick veneer concrete construction
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Filling stone for brick concrete ceilings
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Method forthe production of prestressed concrete pipes
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Improvements in the manufacture of cement pipes
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Precast concrete composite floor
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Surface finished masonry construction unit
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Process forthe manufacture of patterned concrete slabs
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Method of forming a hole in concrete
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Cement brick
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Molds intended in particular for the manufacture of cement pipes
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