Hearing aid and method for making it

Details Hearing aid and method for making it Hearing aid and method for making it

1987-09-08

1989-08-22

Ng, Jin F.

Electrical audio signal processing systems and devices

Sound effects

Reverberators

156258, 1563042, 1563045, 181130, 381 686, H04R 2502, B29C 6500, B32B 3118

Patent

active

048603627

ABSTRACT:
The shell of a hearing aid has an open end with a mating surface. The mating surface mates with a non-planar faceplate. Advantageously, the faceplate is shaped as a part of a sphere. Further advantageously, the surface is shaped by grinding.

REFERENCES:
patent: 1908850 (1933-05-01), Kinsley et al.
patent: 3110356 (1963-11-01), Mendelson
patent: 3496306 (1970-02-01), Pollak
patent: 4550227 (1985-10-01), Topholm
patent: 4672672 (1987-06-01), Eggert et al.
patent: 4716985 (1988-01-01), Haertl

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