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发明名称
ROOF DRAIN
摘要
申请公布号
US3469699(A)
申请公布日期
1969.09.30
申请号
USD3469699
申请日期
1967.10.23
申请人
JOSAM MFG. CO.
发明人
LOUIS BLENDERMANN;NICHOLAS G. SCHEUER
分类号
E04D13/04;(IPC1-7):E03F5/14;E03F5/06
主分类号
E04D13/04
代理机构
代理人
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