Electrical audio signal processing systems and devices – Electro-acoustic audio transducer – Having acoustic wave modifying structure
Reexamination Certificate
2006-05-02
2006-05-02
Ni, Suhan (Department: 2646)
Electrical audio signal processing systems and devices
Electro-acoustic audio transducer
Having acoustic wave modifying structure
C381S345000, C381S348000, C381S397000, C381S341000, C381S338000, C181S149000
Reexamination Certificate
active
07039212
ABSTRACT:
A port for a loudspeaker is disclosed which is sufficiently weather resistant for long term outdoor use and which prevents debris, insects and other vermin from entering the loudspeaker and which is compact and efficient.
REFERENCES:
patent: 4210778 (1980-07-01), Sakurai et al.
patent: 4997057 (1991-03-01), Furukawa
patent: 5517573 (1996-05-01), Polk et al.
patent: 5629502 (1997-05-01), Nakano
patent: 5809154 (1998-09-01), Polk
patent: 6079515 (2000-06-01), Newman
Baran Allen S.
Poling John B.
Polk, Jr. Matthew S.
Starobin Bradley M.
Britannia Investment Corporation
Harvey Dionne
Ni Suhan
Sterne Kessler Goldstein & Fox P.L.L.C.
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