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经营范围
发明名称
Chimney cowls and ventilating devices
摘要
申请公布号
US3018714(A)
申请公布日期
1962.01.30
申请号
US19580758537
申请日期
1958.09.02
申请人
EDMUND BREWER CLIFFORD
发明人
BREWER CLIFFORD EDMUND
分类号
F23L17/12
主分类号
F23L17/12
代理机构
代理人
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地址
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