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DK10612C
(en)
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Machine for Forming Pipes of Concrete or similar.
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DK12754C
(en)
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Machine for Making Slabs of Mortar.
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DK11227C
(en)
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Method of Making Cement.
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DK11307C
(en)
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Machine for the manufacture of ordinary drainage pipes of cement and sand.
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DK11135C
(en)
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Method of Making Calcium Carbide.
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DK11258C
(en)
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Method of Making Calcium Carbide.
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DK10799C
(en)
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Procedure for the manufacture of slabs, beams, pipes and other articles of concrete or similar devices and devices therefor.
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DK8680C
(en)
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Cement Pipe Making Machine.
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DK11609C
(en)
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Method for Manufacturing Asbestos Cement Slabs.
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FR389062A
(en)
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Concrete pile
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CH45091A
(en)
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Reinforced concrete building
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CH42605A
(en)
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Reinforced concrete column
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FR394345A
(en)
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Cement Pipe Making Machine
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AT43436B
(en)
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Concrete reinforcement.
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FR386447A
(en)
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Reinforced concrete pile
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FR364611A
(en)
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Concrete pipe
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DK10750C
(en)
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Sealant for Sewer Pipes.
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DK10471C
(en)
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Form for the production of cement roof tiles.
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CH42446A
(en)
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Reinforced concrete ceiling
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DK6413C
(en)
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Form box for building stone.
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DK15161C
(en)
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Cement Pipe Making Machine.
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DK7315C
(en)
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Device for the manufacture of pipes, pipes, columns or sleeves of cement concrete.
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ES40531A1
(en)
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Reinforced concrete ceilings.
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FR389644A
(en)
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Reinforced concrete constructions
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FR387063A
(en)
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Concrete ceiling
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