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发明名称
SCRAP PREHEATING AND CHARGING APPARATUS
摘要
申请公布号
US3520523(A)
申请公布日期
1970.07.14
申请号
USD3520523
申请日期
1968.05.22
申请人
KOPPERS CO. INC.
发明人
STANLEY T. SCZERBA
分类号
C21C5/56;(IPC1-7):C21C5/00
主分类号
C21C5/56
代理机构
代理人
主权项
地址
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