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发明名称
Expansion joint
摘要
申请公布号
US2331389(A)
申请公布日期
1943.10.12
申请号
US19420435501
申请日期
1942.03.20
申请人
WILLIAM GRUND
发明人
GRUND WILLIAM
分类号
E04B1/68
主分类号
E04B1/68
代理机构
代理人
主权项
地址
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