Combined holder and visual stimulator for infants

Details Combined holder and visual stimulator for infants Combined holder and visual stimulator for infants

1988-09-26

1991-06-11

Burke, Wallace R.

Office supplies; artists and teachers materials

Teaching material

D19 27, D19 76

Patent

active

D03174646

REFERENCES:
patent: D248964 (1978-08-01), Kizlauskas
patent: D260782 (1981-09-01), De Mars
patent: D290137 (1987-06-01), Reilly
patent: 1668573 (1928-05-01), Porter
patent: 1841903 (1932-01-01), McGonigle
patent: 2789836 (1957-04-01), Jeannin
patent: 4523399 (1988-06-01), Cross

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