Hand-held microphone

Recording – communication – or information retrieval equipment – Computer – data processor equipment

Patent

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D1401

Patent

active

D02472350

REFERENCES:
patent: D228193 (1973-08-01), Pruyne
patent: D236355 (1975-08-01), Yang
patent: 3527902 (1970-09-01), Van Liempo
Lafayette Cat. No. 740, .COPYRGT. 1973, p. 199, Microphone, item #99e46393.

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