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发明名称
摘要
申请公布号
JPH0222923(B2)
申请公布日期
1990.05.22
申请号
JP19840063048
申请日期
1984.03.30
申请人
ASAHI OPTICAL CO LTD
发明人
TAKIZAWA MORIO
分类号
B23B1/00;G02B7/04
主分类号
B23B1/00
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