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发明名称
CRUCIBLE-FREE ZONE MELTING OF A CRYSTALLINE ROD
摘要
申请公布号
CA897775(A)
申请公布日期
1972.04.11
申请号
CAD897775
申请日期
申请人
SIEMENS AKTIENGESELLSCHAFT
发明人
WOLFGANG KELLER
分类号
C30B13/20;(IPC1-7):C30B13/20
主分类号
C30B13/20
代理机构
代理人
主权项
地址
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