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发明名称
Expansion joint dowel holder
摘要
申请公布号
US2401964(A)
申请公布日期
1946.06.11
申请号
US19440533382
申请日期
1944.04.29
申请人
ELFREDA C. ROBERTSON
发明人
ROBERTSON RUSSELL R.
分类号
E01C23/04
主分类号
E01C23/04
代理机构
代理人
主权项
地址
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