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发明名称
NONCRUCIBLE ZONE DRAWING OF SEMICONDUCTOR MATERIAL
摘要
申请公布号
CA639325(A)
申请公布日期
1962.04.03
申请号
CAD639325
申请日期
申请人
SIEMENS AND HALSKE AKTIENGESELLSCHAFT
发明人
THEODOR RUMMEL;WOLFGANG KELLER;HANS-FRIEDRICH QUAST
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主分类号
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