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发明名称
SIGNS
摘要
申请公布号
ZA8400893(B)
申请公布日期
1984.10.31
申请号
ZA19840000893
申请日期
1984.02.07
申请人
GEORGE MINTO SPENCE
发明人
GEORGE MINTO SPENCE
分类号
E01F
主分类号
E01F
代理机构
代理人
主权项
地址
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