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发明名称
Wallboard fastener
摘要
申请公布号
US2197750(A)
申请公布日期
1940.04.16
申请号
US19380189799
申请日期
1938.02.10
申请人
LAGAARD ALEXANDER S T
发明人
LAGAARD ALEXANDER S. T.
分类号
E04F13/08
主分类号
E04F13/08
代理机构
代理人
主权项
地址
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