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FR2400E
(en)
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Demountable or non-removable constructions in reinforced cement
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DK3076C
(en)
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Concrete railway sleepers with internal iron skeleton.
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DK3035C
(en)
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Railway sleepers of Cement mortar with Iron inserts.
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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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DK3594C
(en)
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Devices for fastening rails to concrete sleepers.
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CH20599A
(en)
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Rail fastening on concrete sleepers
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DK15809C
(en)
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Railway sleeper of reinforced concrete.
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CH29375A
(en)
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Reinforced concrete railway sleeper
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ES58541A1
(en)
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Reinforced concrete railway sleeper.
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DK3783C
(en)
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Device at sleepers of concrete with iron inserts.
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CH71670A
(en)
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Reinforced concrete sleeper for rails
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DK17158C
(en)
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Procedure for Fastening Rail Rails or Rail Chairs to Concrete sleepers.
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FR318558A
(en)
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Reinforced cement sleepers for railway tracks
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FR335615A
(en)
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Demountable or non-removable constructions in reinforced cement
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FR333874A
(en)
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Reinforced cement sleeper for railway tracks
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FR337491A
(en)
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Reinforced cement railway sleeper
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FR4123E
(en)
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Reinforced cement railway sleeper
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DK5729C
(en)
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Railway sleeper of cement and iron with cavities and arrangement at the same to the rail fastening.
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ES24475A1
(en)
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Improvements in reinforced or reinforced concrete sleepers for railways.
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FR322856A
(en)
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Reinforced cement sleeper for railway tracks
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FR351956A
(en)
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Hollow sleeper in reinforced cement concrete for railway tracks
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CH20003A
(en)
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Concrete structure with joint iron inserts
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DK17162C
(en)
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Molecular construction of reinforced concrete.
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DK3532C
(en)
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Automatic Rail Cleaner for Street Tramways.
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FR348365A
(en)
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Parquet for reinforced cement floors and others
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