4. H - Electricity
  5. 04
  6. B

Mitsutoshi Ayano

H - Electricity – 04 – B

Inventor

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Details

Inventor

Country: Japan

Battery feed circuit for a pair of subscriber lines

H - Electricity – 04 – M
Patent

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Battery feed circuit for subscriber line

H - Electricity – 04 – M
Patent

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Battery feed circuit for telephone subscriber line

H - Electricity – 04 – M
Patent

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Calling signal transmission apparatus

H - Electricity – 04 – M
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Feed circuit in exchanger

H - Electricity – 04 – M
Patent

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Feed circuit in exchanger

H - Electricity – 04 – M
Patent

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Profile ID: LFCA-PAI-P-717178

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