4. Telephonic communications
  5. Terminal
  6. Housing or housing component

Charles Spurgeon Bartlett

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Differential microphone assembly with passive suppression of res

Electrical audio signal processing systems and devices – Electro-acoustic audio transducer – Microphone capsule only
Patent

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Telephonic handset apparatus having an earpiece monitor and redu

Telephonic communications – Terminal – Housing or housing component
Patent

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Profile ID: LFUS-PAI-P-475507

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