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DK15809C
(en)
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Railway sleeper of reinforced concrete.
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CH62083A
(en)
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Reinforced concrete sleeper
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CH55697A
(en)
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Reinforced concrete railway sleeper
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FR441640A
(en)
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Reinforced concrete sleeper
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DK17162C
(en)
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Molecular construction of reinforced concrete.
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FR427122A
(en)
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Reinforced concrete sleeper
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FR433819A
(en)
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Reinforced concrete sleeper
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FR448961A
(en)
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Reinforced cement beam
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CH61635A
(en)
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Reinforced concrete construction
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FI5008A
(en)
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Sätt framställa lättflytande concrete
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FR431574A
(en)
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Reinforced cement railway sleepers
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CH64874A
(en)
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Hollow railway sleeper made of iron-reinforced concrete
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CH59656A
(en)
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Tie ties
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CH51907A
(en)
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Reinforced concrete sleeper
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FR423341A
(en)
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Reinforced cement rail cross member
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CH71670A
(en)
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Reinforced concrete sleeper for rails
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AT68202B
(en)
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Reinforced concrete sleeper.
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DK17993C
(en)
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System of Reinforced Concrete Slabs for Repair and Securing of Railway Tracks.
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FR466426A
(en)
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Reinforcement for reinforced concrete constructions
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FR467589A
(en)
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Reinforced concrete construction method
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CH61340A
(en)
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Reinforced concrete structure
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DK19500C
(en)
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Swell of reinforced concrete.
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CH58591A
(en)
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Reinforced concrete railing
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FR441871A
(en)
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Improvements to reinforced cement railway sleepers
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FR445647A
(en)
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Reinforced cement pile system
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