Spelling game educational unit

Details Spelling game educational unit Spelling game educational unit

1983-10-17

1986-07-22

Ansher, Bernard

Office supplies; artists and teachers materials

Teaching material

Demonstrator or exhibitor

Patent

active

D02847752

REFERENCES:
patent: 445759 (1891-02-01), Dofflemyer et al.
patent: 1470845 (1923-10-01), Johnson
patent: 2461926 (1949-02-01), Russell
patent: 2976621 (1961-03-01), Lowe, Jr.
patent: 3674905 (1972-07-01), Collins, Sr.
patent: 4026043 (1977-05-01), Caruso
patent: 4340373 (1982-07-01), D'Andrade et al.

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