4. Railway switches and signals
  5. Block-signal systems
  6. Automatic

Mario Poggio

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Assembly consisting of a seal gasket for valve stems and a sprin

Seal for a joint or juncture – Seal between relatively movable parts – Relatively rotatable radially extending sealing face member
Patent

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Protective device for railroad signaling apparatus

Railway switches and signals – Block-signal systems – Automatic
Patent

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Profile ID: LFUS-PAI-P-393345

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