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经营范围
发明名称
Tumbling apparatus
摘要
申请公布号
USRE33542(E)
申请公布日期
1991.02.26
申请号
US19900516711
申请日期
1990.04.17
申请人
发明人
分类号
B22D29/02;B22D31/00;B24B31/06
主分类号
B22D29/02
代理机构
代理人
主权项
地址
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