ES121588A1 -
A mechanical cold-fabrication process for vaults for screwing floors, in urban constructions based on cement, sand and coal waste.
- Google Patents
A mechanical cold-fabrication process for vaults for screwing floors, in urban constructions based on cement, sand and coal waste.
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ES121588A1931-02-061931-02-06
A mechanical cold-fabrication process for vaults for screwing floors, in urban constructions based on cement, sand and coal waste.
ExpiredES121588A1
(en)
A system of pieces, plates or tiles of reinforced concrete for inexpensive roofs applicable very especially in cases where the customary slope cannot be given to said roofs.
A new procedure to obtain special concrete based on portland, sand, crushed vegetable fibers, iron clots, cisco, wood sawdust and coloring matters, for the construction of all kinds of works.