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发明名称
Drain hopper
摘要
申请公布号
US1809549(A)
申请公布日期
1931.06.09
申请号
US19270214650
申请日期
1927.08.22
申请人
ERSKINE DUNCAN;AMBROSE JOHN R W
发明人
DUNCAN ERSKINE;AMBROSE JOHN R. W.
分类号
E04D13/04
主分类号
E04D13/04
代理机构
代理人
主权项
地址
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