4. Railway switches and signals
  5. Vehicle-energy actuation
  6. Continuous-rail frogs

Stephen R. Kuhn

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Direct support frog assembly

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

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Direct support frog assembly

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

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Electrically operated railroad switch machine

Railway switches and signals – Fluid-motor actuation
Reexamination Certificate

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Electrically operated railroad switch machine

Railway switches and signals – Fluid-motor actuation
Reexamination Certificate

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Pseudo heavy point frog assembly

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

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Profile ID: LFUS-PAI-P-176197

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