Title:
【考案の名称】回転黒板
Document Type and Number:
Japanese Patent JPS5990492
Kind Code:
U
Inventors:
Ryo Tanaka
Application Number:
JP18729382U
Publication Date:
June 19, 1984
Filing Date:
December 10, 1982
Export Citation:
International Classes:
B43L1/04; A47B97/04; (IPC1-7): B43L1/04; A47B97/04
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