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经营范围
发明名称
WORK INDICATOR
摘要
申请公布号
JPH0487744(A)
申请公布日期
1992.03.19
申请号
JP19900198871
申请日期
1990.07.26
申请人
NEC CORP
发明人
KAMITAKI AKIRA
分类号
B23P21/00
主分类号
B23P21/00
代理机构
代理人
主权项
地址
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