发明名称 |
Adjustable chimney cowl |
摘要 |
|
申请公布号 |
US2188709(A) |
申请公布日期 |
1940.01.30 |
申请号 |
US19390259686 |
申请日期 |
1939.03.03 |
申请人 |
DANIEL FRIEDMAN |
发明人 |
FRIEDMAN DANIEL |
分类号 |
F23L17/10 |
主分类号 |
F23L17/10 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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