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NTIS 바로가기국가/구분 | United States(US) Patent 등록 |
---|---|
국제특허분류(IPC7판) |
|
출원번호 | US-0457654 (1983-01-13) |
발명자 / 주소 |
|
인용정보 | 피인용 횟수 : 5 인용 특허 : 3 |
An irrigation system has a mobile extractor tube rig for moving along a series of water supply standpipes, which are connected to a buried mainline. The rig and/or the standpipes have seals for engagement at the time of transfer. Each standpipe has an upper portion mounted for adjusting movement to
An assembly for an irrigation system, said assembly comprising: a standpipe adapted for connection to a supply of water, said standpipe having a stationary lower portion, and having an upper portion with an upwardly facing outlet, valve means in said standpipe, an extractor tube adapted to be carrie
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