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发明名称
Ventilator expansion screed support and hood construction
摘要
申请公布号
US3057287(A)
申请公布日期
1962.10.09
申请号
US19590847404
申请日期
1959.10.19
申请人
GRAY JOHN J
发明人
GRAY JOHN J.
分类号
B08B15/02;F24F7/10
主分类号
B08B15/02
代理机构
代理人
主权项
地址
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