4. Railway switches and signals
  5. Train dispatching
  6. Central signal control

David Hampton

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Control of model vehicles on a track

Railway switches and signals – Train dispatching – Central signal control
Patent

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Devices and systems for measurement of position of drilling...

Wells – Above ground apparatus – Moving tubing or cable into an existing well
Reexamination Certificate

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Interactive toy

Amusement devices: toys – Figure toy or accessory therefor – Having mechanism or manipulatable means to move figure or...
Patent

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Profile ID: LFUS-PAI-P-1141488

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