4. Horology: time measuring systems or devices
  5. Regulating means
  6. For adjusting the frequency or beat

Henry Walther

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Circuit arrangement for adjusting a pulse frequency of a quartz-

Horology: time measuring systems or devices – Regulating means – For adjusting the frequency or beat
Patent

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Indicator device with vacuum fluorescence elements

Electric lamp and discharge devices: systems – With cathode or cathode heater supply circuit – Pulsating or a.c. supply to the cathode or heater circuit
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Profile ID: LFUS-PAI-P-208634

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