최소 단어 이상 선택하여야 합니다.
최대 10 단어까지만 선택 가능합니다.
다음과 같은 기능을 한번의 로그인으로 사용 할 수 있습니다.
NTIS 바로가기국가/구분 | United States(US) Patent 등록 |
---|---|
국제특허분류(IPC7판) |
|
출원번호 | US-0789922 (1991-11-12) |
발명자 / 주소 |
|
인용정보 | 피인용 횟수 : 1 인용 특허 : 0 |
A sewer chimney and method of forming a sewer chimney for connecting a surface branch sewer pipe to a deeply buried main sewer pipe having a fixture with an upwardly facing opening. The chimney is constructed of a plurality of precast concrete elements including a supporting base adjacent the main s
A method of building a sewer chimney for connecting a surface branch sewer line to a deeply buried main sewer line having a fixture with an upwardly facing opening, and a first seal within said fixture, said method comprising the steps of: (a) inserting one end of an elongated pipe through said open
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