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发明名称
REFRACTORY COATED COMPOSITE OXYGEN LANCE
摘要
申请公布号
US3430940(A)
申请公布日期
1969.03.04
申请号
USD3430940
申请日期
1967.11.08
申请人
DRESSER IND. INC.
发明人
GEORGE H. CRISS
分类号
C21C5/46;(IPC1-7):C21C5/46;C21C7/02;F16L9/14
主分类号
C21C5/46
代理机构
代理人
主权项
地址
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