Hand held communication aid for the mute and hearing impaired

Details Hand held communication aid for the mute and hearing impaired Hand held communication aid for the mute and hearing impaired

1977-10-28

1980-11-25

Ansher, Bernard

Recording, communication, or information retrieval equipment

Computer, data processor equipment

D13 12, D1801, D1402

Patent

active

D02575604

REFERENCES:
patent: D234603 (1975-03-01), Snow et al.
patent: D239287 (1976-03-01), Ault
patent: D248946 (1978-08-01), Koenig
patent: 3699312 (1972-10-01), Jones et al.
patent: 4075621 (1976-11-01), Salmon

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