发明名称 |
Structure of an elbow pipe |
摘要 |
An improved structure of an elbow pipe having filter to filter waste material contained in polluted water. The filter is provided within a cup which is screwed tight to the bottom region of the pipe and can be easily unscrewed for the removal of the blocked waste material.
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申请公布号 |
US5241979(A) |
申请公布日期 |
1993.09.07 |
申请号 |
US19920876398 |
申请日期 |
1992.04.30 |
申请人 |
CHANG, FRANK |
发明人 |
CHANG, FRANK |
分类号 |
B01D29/03;B01D35/02;E03C1/282;E03C1/284;F16L55/24 |
主分类号 |
B01D29/03 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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