4. Electricity: electrical systems and devices
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Donald B. Southard

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Accessory connector

Geometrical instruments
Patent

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Acknowledge back pager with adaptive variable transmitter output

Communications: electrical – Systems – Nonselective paging
Patent

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Acoustic coupling structure for microphone

Acoustics – Anatomic or prosthetic relation – Ear and mouth
Patent

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Acoustical transducer with a slotted piston suspension

Acoustics – Anatomic or prosthetic relation – Ear and mouth
Patent

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Adapter accessory for radio packet modem

Recording – communication – or information retrieval equipment – Video or audio transmission – recording or playback equipment – Element or attachment
Patent

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Profile ID: LFUS-PAI-P-32122

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