4. Railway switches and signals
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Barricade apparatus

Railway switches and signals – Electric automatic highway signals – mine doors – and gates – Car-actuated controller
Patent

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Binary data transmission capability incorporated into pulse...

Railway switches and signals – Roadway-defect protection
Reexamination Certificate

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Block control system for self-propelled vehicles

Railway switches and signals – Cab signal or train control – Motive-power control
Patent

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Block controller

Railway switches and signals – Train-position indication – Miniature model
Reexamination Certificate

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Block controller

Railway switches and signals – Train-position indication – Miniature model
Reexamination Certificate

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Block occupancy detector for model railroads

Railway switches and signals – Train-position indication – Miniature model
Patent

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Block occupancy detector for model railroads

Railway switches and signals – Block-signal systems
Reexamination Certificate

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Brake control device taking into account different brake activat

Railway switches and signals – Cab signal or train control – Speed-control systems
Patent

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Bridge accessory for track vehicles

Railway switches and signals – Drawbridge protection
Patent

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Broken rail and/or broken rail joint bar detection

Railway switches and signals – Roadway-defect protection – Electric
Patent

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Broken rail detection

Railway switches and signals – Block-signal systems – Automatic
Reexamination Certificate

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Broken rail detection system and method

Railway switches and signals – Roadway-defect protection – Electric
Patent

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Broken rail detector for communications-based train control...

Railway switches and signals – Roadway-defect protection
Reexamination Certificate

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Broken rail/bond detectors

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

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