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经营范围
发明名称
Concrete expansion joints
摘要
申请公布号
US2839973(A)
申请公布日期
1958.06.24
申请号
US19550479529
申请日期
1955.01.03
申请人
TRUST COMPANY UNION SAVINGS;HELTZEL CARL J
发明人
COMPANY UNION SAVINGS & TRUST;HELTZEL CARL J.
分类号
E01C11/12;E01C11/14
主分类号
E01C11/12
代理机构
代理人
主权项
地址
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