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发明名称
VENTILATING SYSTEM
摘要
申请公布号
CA327447(A)
申请公布日期
1932.11.08
申请号
CAD327447
申请日期
申请人
DAVID LUPTON'S SONS COMPANY
发明人
JOSEPH HENRY SHEARD
分类号
主分类号
代理机构
代理人
主权项
地址
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