Dictation mask

Recording – communication – or information retrieval equipment – Video or audio transmission – recording or playback equipment – Dictating or transcribing

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1401

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D04279867

REFERENCES:
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patent: 3193624 (1965-07-01), Webb et al.
patent: 3796842 (1974-03-01), Guille
patent: 4129754 (1978-12-01), Gore

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