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发明名称
Composition of matter and method of making the same
摘要
申请公布号
US1956553(A)
申请公布日期
1934.05.01
申请号
US19320613145
申请日期
1932.05.23
申请人
ATKIN ARTHUR D
发明人
ATKIN ARTHUR D.
分类号
C22B15/00;C22B15/14
主分类号
C22B15/00
代理机构
代理人
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