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发明名称
Brass powders
摘要
申请公布号
US2373158(A)
申请公布日期
1945.04.10
申请号
US19430515986
申请日期
1943.12.28
申请人
JOHN WULFF
发明人
WULFF JOHN
分类号
B22F9/00
主分类号
B22F9/00
代理机构
代理人
主权项
地址
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