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发明名称
Positioning device for pin stem finding
摘要
申请公布号
US2711569(A)
申请公布日期
1955.06.28
申请号
US19540402781
申请日期
1954.01.07
申请人
B. A. BALLOU & CO., INCORPORATED
发明人
WATSON JOHN R.
分类号
B22C9/06
主分类号
B22C9/06
代理机构
代理人
主权项
地址
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