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发明名称
WRITING SHEET MOVABLE TYPE BLACKBOARD
摘要
申请公布号
JPS61135796(A)
申请公布日期
1986.06.23
申请号
JP19840256453
申请日期
1984.12.06
申请人
TOKYO ELECTRIC CO LTD
发明人
TSUJIMURA SUSUMU
分类号
B43L1/08;B43L1/04
主分类号
B43L1/08
代理机构
代理人
主权项
地址
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