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NTIS 바로가기국가/구분 | United States(US) Patent 등록 |
---|---|
국제특허분류(IPC7판) |
|
출원번호 | US-0508141 (1983-06-27) |
발명자 / 주소 |
|
인용정보 | 피인용 횟수 : 20 인용 특허 : 0 |
A self supporting grate for a drain structure can be improved by including as part of the grate a mounting base sized and shaped to attach the grate to the drain structure. At least a portion of the grate is formed as a generally upwardly projecting wall attaching to and extending from the base. The
In a self supporting foraminous grate for a drain structure an improvement which comprises: said grate having an exterior and an interior, said exterior of said grate communicating with the ambient environment, said interior of said grate communicating with said drain structure such that fluid in th
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