Plug-mounted background noise amplifier

Details Plug-mounted background noise amplifier Plug-mounted background noise amplifier

1985-04-25

1988-08-02

Ansher, Bernard

Recording, communication, or information retrieval equipment

Computer, data processor equipment

D14 99

Patent

active

D02970112

REFERENCES:
patent: D261887 (1981-11-01), Hisatsune
patent: D280721 (1985-09-01), Quigley et al.
patent: 2832012 (1958-04-01), Kleason et al.
patent: 4594644 (1986-06-01), Painter

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