Combined keypad and speaker porting

Details Combined keypad and speaker porting Combined keypad and speaker porting

1992-09-01

1993-11-23

Eisenzopf, Reinhard J.

Telecommunications

Receiver or analog modulated signal frequency converter

Cabinet, housing, or chassis structure

455350, H04B 108

Patent

active

052652742

ABSTRACT:
A combined keypad and speaker portion (10) is provided wherein a membrane keypad (26) having a plurality of keys (28) has a plurality of speaker sound perforations (38) interposed between the plurality of keys (28).

REFERENCES:
patent: 4081631 (1978-03-01), Feder
patent: 4225970 (1989-09-01), Jaramillo et al.
patent: 4719322 (1988-01-01), Guzik et al.
patent: 4832150 (1989-05-01), Just et al.
patent: 4963876 (1990-10-01), Sanders et al.

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