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发明名称
PERSPECTOGRAPH
摘要
申请公布号
SU835837(A1)
申请公布日期
1981.06.07
申请号
SU19792773179
申请日期
1979.05.29
申请人
MEDVEDEV PAVEL A,SU;SUROVA EKATERINA S,SU
发明人
MEDVEDEV PAVEL A,SU;SUROVA EKATERINA S,SU
分类号
B43L13/04;(IPC1-7):B43L13/04
主分类号
B43L13/04
代理机构
代理人
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地址
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