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发明名称
VENTILATING APPARATUS
摘要
申请公布号
CA515068(A)
申请公布日期
1955.07.26
申请号
CAD515068
申请日期
申请人
NORVENT LIMITED
发明人
BRIAN W. R. HICKMOTT
分类号
主分类号
代理机构
代理人
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