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发明名称
摘要
申请公布号
JPS4984473(A)
申请公布日期
1974.08.14
申请号
JP19720127440
申请日期
1972.12.19
申请人
发明人
分类号
G04G17/08;G04B39/00;G04G99/00
主分类号
G04G17/08
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代理人
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地址
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