Educational blocks

Details Educational blocks Educational blocks

1988-04-25

1989-02-07

Grieb, William H.

Education and demonstration

Language

Alphabet letter formation, recognition, or sequencing

446124, G09B 106, A63H 3310

Patent

active

048028541

ABSTRACT:
A novel set of large letters of the alphabet and numbers with tracks for their support and combination is provided for manufacture as both an educational and a creative plaything.

REFERENCES:
patent: 2327471 (1943-08-01), Tiers
patent: 2940211 (1960-06-01), Kelley
patent: 3270452 (1966-09-01), D'Elia et al.
patent: 3305945 (1967-02-01), Crawford et al.

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