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发明名称
摘要
申请公布号
CH1310968(A4)
申请公布日期
1971.06.15
申请号
CHD1310968D
申请日期
1968.08.29
申请人
发明人
分类号
B63C11/02;B63C11/32;G01C13/00;G04B47/06
主分类号
B63C11/02
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代理人
主权项
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