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发明名称
Spike
摘要
申请公布号
US1868964(A)
申请公布日期
1932.07.26
申请号
US19300421959
申请日期
1930.01.20
申请人
BEEGLE RAYMOND E
发明人
BEEGLE RAYMOND E.
分类号
E01B9/06
主分类号
E01B9/06
代理机构
代理人
主权项
地址
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