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经营范围
发明名称
Crucible-free zone-melting apparatus
摘要
申请公布号
US2898429(A)
申请公布日期
1959.08.04
申请号
US19580773903
申请日期
1958.11.14
申请人
SIEMENS-SCHUCKERTWERKE AKTIENGESELLSCHAFT
发明人
EMEIS REIMER;KELLER WOLFGANG
分类号
C30B13/20
主分类号
C30B13/20
代理机构
代理人
主权项
地址
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