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经营范围
发明名称
Coke oven door
摘要
申请公布号
US1880600(A)
申请公布日期
1932.10.04
申请号
US19300420030
申请日期
1930.01.11
申请人
UMBEL ROY E
发明人
UMBEL ROY E.
分类号
C10B25/16
主分类号
C10B25/16
代理机构
代理人
主权项
地址
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