Language learning aid

Details Language learning aid Language learning aid

1990-06-01

1992-03-10

Gandy, James M.

Office supplies; artists and teachers materials

Teaching material

Sensory feedback, e.g., audio-visual teaching machine

D14165

Patent

active

D03245446

REFERENCES:
patent: D220340 (1971-03-01), Sasaki
patent: D256028 (1980-07-01), Lawrence et al.
patent: D277474 (1985-02-01), Miura
patent: D280217 (1985-08-01), Tomozawa et al.
patent: D309923 (1990-08-01), Cheung
patent: D311006 (1990-10-01), Hino et al.
Popular Science, 1979, p. 153, Teaching Aid at top of page.
McCalls, 12/1988, p. 89, "Speak & Music" Learning Aid.

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