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经营范围
发明名称
Circular hole cutter
摘要
申请公布号
US2795277(A)
申请公布日期
1957.06.11
申请号
US19530400903
申请日期
1953.12.29
申请人
WORTHAM EDGAR D
发明人
WORTHAM EDGAR D.
分类号
B23B51/05
主分类号
B23B51/05
代理机构
代理人
主权项
地址
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