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发明名称
Trough hanger
摘要
申请公布号
US2879961(A)
申请公布日期
1959.03.31
申请号
US19540420887
申请日期
1954.04.05
申请人
BERTRAM WILLIAM A
发明人
BERTRAM WILLIAM A.
分类号
E04D13/072
主分类号
E04D13/072
代理机构
代理人
主权项
地址
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