Title:
【考案の名称】英語学習ブツク
Document Type and Number:
Japanese Patent JPS5990976
Kind Code:
U
Inventors:
Yusaku Yamashita
Application Number:
JP18666682U
Publication Date:
June 20, 1984
Filing Date:
December 09, 1982
Export Citation:
International Classes:
G09B19/06; B42D1/00; B42D15/00; G09B19/08; (IPC1-7): G09B19/06; B42D1/00
Domestic Patent References:
| JPS50161329A | 1975-12-27 | |||
| JPS5739073U | 1982-03-02 |