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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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CH44648A
(en)
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Sewer screen
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AT41041B
(en)
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Concrete iron sleeper.
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DK11227C
(en)
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Method of Making Cement.
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DK11258C
(en)
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Method of Making Calcium Carbide.
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DK11135C
(en)
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Method of Making Calcium Carbide.
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DK10612C
(en)
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Machine for Forming Pipes of Concrete or similar.
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DK17475C
(en)
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Form for Casting of Sewer Pipes and the like.
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DK11609C
(en)
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Method for Manufacturing Asbestos Cement Slabs.
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DK10750C
(en)
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Sealant for Sewer Pipes.
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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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DK11289C
(en)
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Procedure for the Production of Carbide.
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CH43866A
(en)
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siphon
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DK10471C
(en)
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Form for the production of cement roof tiles.
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DK8680C
(en)
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Cement Pipe Making Machine.
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FR394345A
(en)
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Cement Pipe Making Machine
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CH42605A
(en)
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Reinforced concrete column
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AT44116B
(en)
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Concrete sleeper.
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CH43275A
(en)
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Artificial stone
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AT43436B
(en)
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Concrete reinforcement.
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DK13719C
(en)
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Method and Machine for the manufacture of concrete pipes and the like with or Iron reinforcement.
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DK10393C
(en)
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Procedure for the production of water gas.
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DK15161C
(en)
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Cement Pipe Making Machine.
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FR391046A
(en)
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Pipe bridge
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DK8610C
(en)
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Mass for paving streets and the like and for the formation of stone floors, drainage pipes and the like.
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