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发明名称
Apparatus for machining preformed holes
摘要
申请公布号
US2295856(A)
申请公布日期
1942.09.15
申请号
US19390270623
申请日期
1939.04.28
申请人
THE MALLORY RESEARCH COMPANY
发明人
MALLORY MARION
分类号
B23D77/00;B23D77/12
主分类号
B23D77/00
代理机构
代理人
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地址
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