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发明名称
Coated non-irritating coal tar pitch
摘要
申请公布号
US2714077(A)
申请公布日期
1955.07.26
申请号
US19530379075
申请日期
1953.09.08
申请人
WHITEHEAD BROTHERS COMPANY
发明人
WALLACE BURGESS P.
分类号
B22C1/20
主分类号
B22C1/20
代理机构
代理人
主权项
地址
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