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发明名称
Folding mat
摘要
申请公布号
US3191509(A)
申请公布日期
1965.06.29
申请号
US19610082204
申请日期
1961.01.12
申请人
BETHLEHEM STEEL CORPORATION
发明人
PEARSON WILLIAM J.
分类号
E01C11/18;E04C5/04
主分类号
E01C11/18
代理机构
代理人
主权项
地址
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