4. H - Electricity
  5. 03
  6. K

David R. Vogelpohl

H - Electricity – 03 – K

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Country: United States Of America

Electronic tone ringer

H - Electricity – 04 – M
Patent

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Electronic tone ringer

H - Electricity – 04 – M
Patent

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Method and circuitry for encoding telephone ringing signals

H - Electricity – 04 – M
Patent

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Relaxation oscillator with plural constant current sources

H - Electricity – 03 – K
Patent

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Profile ID: LFCA-PAI-P-275025

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