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摘要
申请公布号
DE2409513(B2)
申请公布日期
1980.04.03
申请号
DE19742409513
申请日期
1974.02.28
申请人
SIGMA CORP., TOKIO
发明人
YAMAKI, MICHIHIRO, TOKIO
分类号
G02B7/02;G03B7/20;G03B9/07;(IPC1-7):G03B9/02
主分类号
G02B7/02
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代理人
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