4. H - Electricity
  5. 04
  6. R

Conrad D. Lafrance

H - Electricity – 04 – R

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Directional microphone assembly

H - Electricity – 04 – R
Patent

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Telephone conferencing apparatus

H - Electricity – 04 – R
Patent

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Telephone handset having close-talking microphone

H - Electricity – 04 – M
Patent

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Telephone handset with integrated flux coil

H - Electricity – 04 – M
Patent

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Telephone handset with integrated flux coil

H - Electricity – 04 – M
Patent

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Profile ID: LFCA-PAI-P-212029

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