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发明名称
Journal box
摘要
申请公布号
US2239646(A)
申请公布日期
1941.04.22
申请号
US19390282123
申请日期
1939.06.30
申请人
AMERICAN STEEL FOUNDRIES
发明人
COTTRELL ROBERT B.
分类号
B61F15/02
主分类号
B61F15/02
代理机构
代理人
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