Title:
【発明の名称】指訓練器付き算盤
Document Type and Number:
Japanese Patent JPH0736139
Kind Code:
B2
Inventors:
Atsuhiko Sato
Application Number:
JP15553292A
Publication Date:
April 19, 1995
Filing Date:
May 01, 1992
Export Citation:
Assignee:
Atsuhiko Sato
International Classes:
G06C1/00; (IPC1-7): G06C1/00
Domestic Patent References:
| JP5953918A | ||||
| JP3184571A |
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