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经营范围
发明名称
Expansion joint
摘要
申请公布号
US2227614(A)
申请公布日期
1941.01.07
申请号
US19330692735
申请日期
1933.10.09
申请人
WILLARD DONALD E
发明人
WILLARD DONALD E.
分类号
E01C11/14
主分类号
E01C11/14
代理机构
代理人
主权项
地址
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