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发明名称
Tamper
摘要
申请公布号
US2234831(A)
申请公布日期
1941.03.11
申请号
US19390263147
申请日期
1939.03.21
申请人
PORTER EDWIN R
发明人
PORTER EDWIN R.
分类号
E02D3/046
主分类号
E02D3/046
代理机构
代理人
主权项
地址
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