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发明名称
Furnace roof
摘要
申请公布号
US1778776(A)
申请公布日期
1930.10.21
申请号
US19220608345
申请日期
1922.12.21
申请人
AMERICAN ARCH COMPANY, INC.
发明人
STEVENS ENOCH P.
分类号
F27D1/02
主分类号
F27D1/02
代理机构
代理人
主权项
地址
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