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经营范围
发明名称
Forming riser openings
摘要
申请公布号
US2765505(A)
申请公布日期
1956.10.09
申请号
US19520291397
申请日期
1952.06.03
申请人
GRIFFIN WHEEL COMPANY
发明人
SYLVESTER EDMUND Q.
分类号
B22C9/08
主分类号
B22C9/08
代理机构
代理人
主权项
地址
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