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发明名称
METHOD FOR ENGRAVING BY MEANS OF AN ELECTRON BEAM
摘要
<p>The method allows to obtain successively and rapidly cavities at the surface of a piece (3) by using an electron beam.</p>
申请公布号
WO1982001787(A1)
申请公布日期
1982.05.27
申请号
DE1980000172
申请日期
1980.11.22
申请人
发明人
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主分类号
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