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发明名称
DEVICE FOR HEATER MOVEMENT IN CRUCIBLE-FREE ZONE MELTING A CRYSTALLINE ROD
摘要
申请公布号
US3630684(A)
申请公布日期
1971.12.28
申请号
USD3630684
申请日期
1967.09.22
申请人
SIEMENS AG.
发明人
WOLFGANG KELLER
分类号
C30B13/32;H01L21/208;(IPC1-7):B01J17/10
主分类号
C30B13/32
代理机构
代理人
主权项
地址
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