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

Railway switches and signals – Vehicle-energy actuation – Continuous-rail frogs
Patent

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Railroad spring frog assembly

Railway switches and signals – Vehicle-energy actuation – Continuous-rail frogs
Patent

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Railroad spring wing frog assembly

Railway switches and signals – Vehicle-energy actuation – Continuous-rail frogs
Reexamination Certificate

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Spring rail frog

Railway switches and signals – Vehicle-energy actuation – Continuous-rail frogs
Patent

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Spring rail frog

Railway switches and signals – Vehicle-energy actuation – Continuous-rail frogs
Patent

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Spring rail frog having bendable rail with modified cross-sectio

Railway switches and signals – Vehicle-energy actuation – Continuous-rail frogs
Patent

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Spring rail frog having switchable magnet for holding wing rail

Railway switches and signals – Vehicle-energy actuation – Continuous-rail frogs
Patent

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Wing rail hold-down

Railway switches and signals – Vehicle-energy actuation – Continuous-rail frogs
Patent

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