4. Railways: surface track
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Capped highway grade crossing

Railways: surface track – Roadbed – Street crossing
Patent

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Components for ballast-less railroad lines laid on pre-fabricate

Railways: surface track – Roadbed – Continuous
Patent

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Composite rubber/concrete railroad grade crossing system

Railways: surface track – Roadbed – Street crossing
Patent

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Concrete grade crossing panels having integral elastomeric seals

Railways: surface track – Roadbed – Street crossing
Patent

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Concrete grade crossing system

Railways: surface track – Roadbed – Continuous
Patent

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Concrete railroad grade crossing panels

Railways: surface track – Roadbed
Reexamination Certificate

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Concrete railroad grade crossing panels

Railways: surface track – Roadbed – Street crossing
Reexamination Certificate

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Concrete railroad grade crossing panels

Railways: surface track – Roadbed – Street crossing
Reexamination Certificate

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Concrete railroad grade crossing panels

Railways: surface track – Roadbed – Street crossing
Reexamination Certificate

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Concrete slab structure for railway track

Railways: surface track – Roadbed – Continuous
Patent

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Containment reservoir and method

Railways: surface track – Roadbed
Patent

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Corrosion resistant self-aligning track configurations particula

Railways: surface track – Roadbed – Continuous
Patent

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Covering level with rails for railway tracks

Railways: surface track – Roadbed – Street crossing
Reexamination Certificate

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Cushioned railroad truck roadway crossing module

Railways: surface track – Roadbed – Street crossing
Patent

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