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发明名称
POLYBASE COUNTER
摘要
申请公布号
US3579866(A)
申请公布日期
1971.05.25
申请号
USD3579866
申请日期
1969.03.03
申请人
JOHN EVERETT MILLER
发明人
JOHN EVERETT MILLER
分类号
G09B19/02;(IPC1-7):G09B19/02
主分类号
G09B19/02
代理机构
代理人
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地址
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