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发明名称
IMPROVEMENTS IN OR RELATING TO THE PRODUCTION OF FRACTURE-RESISTANT SPINEL CRYSTALS
摘要
申请公布号
GB1237654(A)
申请公布日期
1971.06.30
申请号
GB19690026361
申请日期
1969.05.23
申请人
SIEMENS AKTIENGESELLSCHAFT
发明人
分类号
C30B29/26;H01L21/84
主分类号
C30B29/26
代理机构
代理人
主权项
地址
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