4. Railway switches and signals
  5. Cab signal or train control
  6. Speed-control systems

Siemens Aktiengesellshaft

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Apparatus, method and system for synchronizing slave system...

Electrical computers and digital processing systems: support – Synchronization of clock or timing signals – data – or pulses
Reexamination Certificate

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Buffer layer for improving control of layer thickness

Active solid-state devices (e.g. – transistors – solid-state diode – Integrated circuit structure with electrically isolated... – Including dielectric isolation means
Patent

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Circuit arrangement for protecting electronic interface circuit

Telephonic communications – Subscriber line or transmission line interface – Protective circuit
Patent

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Circuit arrangement for the synchronization of a digital subscri

Multiplex communications – Wide area network – Packet switching
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Connecting terminal for signal lines

Equipment for production – distribution – or transformation of ene – Distribution – modification or control – Connector – conductor or housing therefor
Patent

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