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经营范围
发明名称
SPALLING RESISTANT REFRACTORY BRICK
摘要
申请公布号
CA647259(A)
申请公布日期
1962.08.21
申请号
CAD647259
申请日期
申请人
CANADIAN REFRACTORIES LIMITED
发明人
GEORGE R. RIGBY
分类号
主分类号
代理机构
代理人
主权项
地址
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