4. Railway switches and signals
  5. Crossings, frogs, and mates
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Flange bearing bolted rail frog for railroad turnouts and crossi

Railway switches and signals – Crossings – frogs – and mates – Flange-supported wheel
Patent

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Flared railway frog

Railway switches and signals – Crossings – frogs – and mates – Details
Reexamination Certificate

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Flat and planar match system between rails and fillers to railro

Railway switches and signals – Crossings – frogs – and mates
Patent

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Flat and planar match system between rails and fillers to...

Railway switches and signals – Crossings – frogs – and mates
Reexamination Certificate

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Flat and planar match system between rails and fillers to...

Railway switches and signals – Crossings – frogs – and mates
Reexamination Certificate

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Frog tip that can be shifted relative to the wing rails

Railway switches and signals – Crossings – frogs – and mates – Frogs
Patent

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Frog with interchangeable insert

Railway switches and signals – Crossings – frogs – and mates – Frogs
Patent

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