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发明名称
Means for grading articles by size
摘要
申请公布号
US2661840(A)
申请公布日期
1953.12.08
申请号
US19510245782
申请日期
1951.09.10
申请人
BALLARD JR STEPHEN;PETER RENOLD
发明人
JR. STEPHEN BALLARD,;RENOLD PETER
分类号
B07B13/075
主分类号
B07B13/075
代理机构
代理人
主权项
地址
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