Title:
【考案の名称】学習器具
Document Type and Number:
Japanese Patent JPS6063871
Kind Code:
U
Inventors:
Tomoko Kitajima
Application Number:
JP15676483U
Publication Date:
May 04, 1985
Filing Date:
October 07, 1983
Export Citation:
International Classes:
G09B3/02; G09B19/02; (IPC1-7): G09B3/02; G09B19/02
Domestic Patent References:
| JPS4925549U | 1974-03-05 |
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