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发明名称
AUTOMATIC BLACKBOARD DUSTER
摘要
申请公布号
GB2132946(B)
申请公布日期
1986.09.03
申请号
GB19820036162
申请日期
1982.12.20
申请人
* WEN-CHIN-LEE
发明人
* WEN-CHIN-LEE
分类号
B43L21/02;(IPC1-7):B43L21/02
主分类号
B43L21/02
代理机构
代理人
主权项
地址
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