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发明名称
Expansion joint for bridges and the like
摘要
申请公布号
US1799574(A)
申请公布日期
1931.04.07
申请号
US19290402345
申请日期
1929.10.25
申请人
WARD HOWARD E
发明人
WARD HOWARD E.
分类号
E01D19/06
主分类号
E01D19/06
代理机构
代理人
主权项
地址
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