Electrical audio signal processing systems and devices – Electro-acoustic audio transducer – Microphone capsule only
Reexamination Certificate
2005-05-24
2005-05-24
Ni, Suhan (Department: 2643)
Electrical audio signal processing systems and devices
Electro-acoustic audio transducer
Microphone capsule only
C381S361000, C381S368000
Reexamination Certificate
active
06898294
ABSTRACT:
A microphone set comprises a microphone assembly having a square pillar shape, and a tube which has a cylindrical shape and covers the side wall of the microphone assembly.
REFERENCES:
patent: 3414689 (1968-12-01), Gummel et al.
patent: 5825896 (1998-10-01), Leedom
patent: 6285772 (2001-09-01), Tate et al.
patent: 6359993 (2002-03-01), Brimhall
patent: 6522759 (2003-02-01), Mori
Ojima Tsutomu
Sekiguchi Toru
Citizen Electronics Co. Ltd.
Citizen Iwate Co., Ltd.
Dennison Schultz Dougherty & MacDonald
Ni Suhan
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