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发明名称
Method for forming metal balls
摘要
申请公布号
US2358378(A)
申请公布日期
1944.09.19
申请号
US19410402408
申请日期
1941.07.14
申请人
BRENHOLTZ GEORGE E
发明人
BRENHOLTZ GEORGE E.
分类号
B21H1/14
主分类号
B21H1/14
代理机构
代理人
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