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发明名称
Expansible mandrel
摘要
申请公布号
US2526772(A)
申请公布日期
1950.10.24
申请号
US19470788434
申请日期
1947.11.28
申请人
REYNOLDS FREDERICK N
发明人
REYNOLDS FREDERICK N.
分类号
B23B31/40
主分类号
B23B31/40
代理机构
代理人
主权项
地址
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