4. Railways: surface track
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Prefabricated embedded railway track system

Railways: surface track – Roadbed – Street crossing
Patent

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Prefabricated embedded railway track system

Railways: surface track – Roadbed – Street crossing
Patent

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Prefabricated embedded railway track system with removable...

Railways: surface track – Roadbed – Street crossing
Reexamination Certificate

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Prefabricated rail base unit consisting of a plurality of projec

Railways: surface track – Portable track – Simulated roadbeds
Patent

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Prefabricated railway track system

Railways: surface track – Roadbed – Street crossing
Reexamination Certificate

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Preloading rail clips in steel sleepers

Railways: surface track – Rail seats
Reexamination Certificate

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Prestressed concrete cross tie having increased fatigue life

Railways: surface track – Ties – Nonmetallic
Patent

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Prestressed concrete railroad tie

Railways: surface track – Ties – Nonmetallic
Patent

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Procedure for installation, stable with respect to gage distance

Railways: surface track – Tie arrangement
Patent

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Process for manufacturing a railroad rail support

Railways: surface track – Ties – Forms
Patent

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Process for supporting a railway track installation

Railways: surface track – Roadbed
Patent

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Profile transition rail and method for producing said rail

Railways: surface track – Rail joints – Compromise
Reexamination Certificate

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Profiled bar

Railways: surface track – Rail joints – Splice bars
Reexamination Certificate

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