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经营范围
发明名称
Adjustable keystone assembly of molded refractory material for arches, walls and the ike
摘要
申请公布号
US3396504(A)
申请公布日期
1968.08.13
申请号
US19660541603
申请日期
1966.04.11
申请人
MAGNESITA S. A.
发明人
OLIVEIRA LUIZ ROBERTO DE
分类号
E04B2/12
主分类号
E04B2/12
代理机构
代理人
主权项
地址
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