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发明名称
Electrical spark machining devices
摘要
申请公布号
US2798934(A)
申请公布日期
1957.07.09
申请号
US19550486626
申请日期
1955.02.07
申请人
CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE
发明人
BRUMA MARC
分类号
B23H1/02
主分类号
B23H1/02
代理机构
代理人
主权项
地址
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