发明名称 |
CORRUGATED DRAINAGE TUBES AND FITTINGS |
摘要 |
Flexible corrugated drainage tubes having alternating annular peaks and valleys and a plurality of slotted openings arranged transversely to the the longitudinal axis of the tubes. The fittings include flexible couplings for connecting the ends of corrugated tubes together and end plugs for capping the ends of tubes.
|
申请公布号 |
US3699684(A) |
申请公布日期 |
1972.10.24 |
申请号 |
USD3699684 |
申请日期 |
1970.06.30 |
申请人 |
ADVANCED DRAINAGE SYSTEMS INC. |
发明人 |
MARTY E. SIXT |
分类号 |
E02B11/00;G02B6/44;(IPC1-7):E02B13/00;F16L11/04 |
主分类号 |
E02B11/00 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|