4. H - Electricity
  5. 04
  6. M

Fumikazu Hamatani

H - Electricity – 04 – M

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Calling circuit

H - Electricity – 04 – M
Patent

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Communications system having voice and digital data...

H - Electricity – 04 – Q
Patent

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Constant current circuit

G - Physics – 05 – F
Patent

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Control circuitry for key telephone apparatus

H - Electricity – 04 – M
Patent

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Data transmission method

H - Electricity – 04 – B
Patent

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Communications system having voice and digital data...

H - Electricity – 04 – Q
Patent

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Profile ID: LFCA-PAI-P-49297

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