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发明名称
Brick
摘要
申请公布号
US2029814(A)
申请公布日期
1936.02.04
申请号
US19330692749
申请日期
1933.10.09
申请人
DUNN FRANK B
发明人
DUNN FRANK B.
分类号
E01C5/04
主分类号
E01C5/04
代理机构
代理人
主权项
地址
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