4. Railway switches and signals
  5. Electric automatic highway signals, mine doors, and gates

Spiro J. Pappas

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Grade crossing assembly

Railway switches and signals – Electric automatic highway signals – mine doors – and gates
Patent

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Laterally adjustable adapter bracket for a grade crossing gate a

Railway switches and signals – Electric automatic highway signals – mine doors – and gates – Normally closed track circuit
Patent

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Profile ID: LFUS-PAI-P-790600

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