Hand-held speech aid

Details Hand-held speech aid Hand-held speech aid

1992-05-12

1994-02-01

Reid, Stella

Medical and laboratory equipment

Equipment for diagnosis, analysis, or treatment

Auricular

Patent

active

D03439020

REFERENCES:
patent: 3978286 (1974-11-01), Watson
patent: 4272647 (1981-06-01), Veit et al.
patent: 4612664 (1986-09-01), Walsh et al.
patent: 4726066 (1988-02-01), Bloomfield
Sales Brochure for Romet Speech-Aid not/dated.

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