4. Railways: surface track
  5. Roadbed
  6. Street crossing

Joseph R. Szarka

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Construction equipment lockout system with emergency shutdown

Telecommunications – Transmitter and receiver at separate stations – Having diverse art device
Reexamination Certificate

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Drive mechanism for boring machine

Boring or penetrating the earth – With means to feed drive
Reexamination Certificate

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Equipment lockout system

Telecommunications – Transmitter and receiver at separate stations – Having diverse art device
Reexamination Certificate

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Method for providing a vehicular supporting deck for a railroad

Railways: surface track – Roadbed – Street crossing
Patent

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Profile ID: LFUS-PAI-P-1374873

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