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发明名称
摘要
申请公布号
FR2048634(A5)
申请公布日期
1971.03.19
申请号
FR19700018529
申请日期
1970.05.21
申请人
SPERRY RAND
发明人
分类号
G06K21/00;G06K21/02;G11B19/00;(IPC1-7):G06K21/00;B07C3/00
主分类号
G06K21/00
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