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发明名称
Pilot pulse spark machining methods and apparatus
摘要
申请公布号
US2979639(A)
申请公布日期
1961.04.11
申请号
US19580740763
申请日期
1958.06.09
申请人
FIRTH STERLING INC.
发明人
WILLIAMS EVERARD M.;PORTERFIELD CECIL PAUL
分类号
B23H1/02;H01J37/34
主分类号
B23H1/02
代理机构
代理人
主权项
地址
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