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发明名称
PRODUCTION OF BROWN ROCK CRYSTAL
摘要
申请公布号
JPH0416586(A)
申请公布日期
1992.01.21
申请号
JP19900121009
申请日期
1990.05.10
申请人
SEIKO INSTR INC
发明人
KURODA HIROSHI
分类号
C30B7/10;C30B29/18
主分类号
C30B7/10
代理机构
代理人
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