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发明名称
Antisiphon trap
摘要
申请公布号
US1935935(A)
申请公布日期
1933.11.21
申请号
US19310515492
申请日期
1931.02.13
申请人
BLANCHARD HYMEN A
发明人
BLANCHARD HYMEN A.
分类号
E03C1/294
主分类号
E03C1/294
代理机构
代理人
主权项
地址
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