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发明名称
Piling
摘要
申请公布号
US2018625(A)
申请公布日期
1935.10.22
申请号
US19350034425
申请日期
1935.08.02
申请人
OTTO GRAVE
发明人
GRAVE OTTO
分类号
E02D5/04;E02D5/08
主分类号
E02D5/04
代理机构
代理人
主权项
地址
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