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发明名称
VENTILATING APPARATUS
摘要
申请公布号
CA522052(A)
申请公布日期
1956.02.21
申请号
CAD522052
申请日期
申请人
THE PYLE-NATIONAL COMPANY
发明人
WILLIAM A. WULLE
分类号
主分类号
代理机构
代理人
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