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摘要
申请公布号
US2914824(A)
申请公布日期
1959.12.01
申请号
US19550483322
申请日期
1955.01.21
申请人
FRANK H. ELLENBAUM
发明人
MARCEC ERVIN A.
分类号
B22D7/10
主分类号
B22D7/10
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