Children's keyboard

Details Children's keyboard Children's keyboard

1993-07-21

1995-03-07

Nunn, Freda S.

Recording, communication, or information retrieval equipment

Video or audio transmission, recording or playback equipment

Telephone equipment

D19 60

Patent

active

D03560759

REFERENCES:
patent: D303685 (1989-09-01), Vafiadis
patent: D336468 (1993-06-01), Reiter
patent: 4536160 (1985-08-01), Hatfield
patent: 5059048 (1991-10-01), Sirkin

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