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发明名称
Drain fitting
摘要
申请公布号
US1918515(A)
申请公布日期
1933.07.18
申请号
US19320602225
申请日期
1932.03.31
申请人
BESTE ERNST A
发明人
BESTE ERNST A.
分类号
E03C1/23
主分类号
E03C1/23
代理机构
代理人
主权项
地址
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