4. Electricity: circuit makers and breakers
  5. Retarded
  6. Clock train

Friedrich X. Thoma

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Magnetically retentive programmable switching control device

Electricity: magnetically operated switches – magnets – and electr – Electromagnetically actuated switches – Periodic
Patent

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Multi-range timer switch device

Electricity: circuit makers and breakers – Retarded – Clock train
Patent

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Program carrier for switching chronometer systems

Horology: time measuring systems or devices – Time interval – Electrical or electromechanical
Patent

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Programmable control for a switching chronometer

Electricity: magnetically operated switches – magnets – and electr – Electromagnetically actuated switches – Periodic
Patent

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Profile ID: LFUS-PAI-P-138649

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