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NTIS 바로가기국가/구분 | United States(US) Patent 등록 |
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국제특허분류(IPC7판) |
|
출원번호 | US-0105361 (1981-10-07) |
발명자 / 주소 |
|
출원인 / 주소 |
|
인용정보 | 피인용 횟수 : 3 인용 특허 : 0 |
The utility of a cover for vents or drains is improved by having a unitary, integral fastening means which can be used to either secure the covering so securely that mutilation of the cover may be required to remove the cover or that the cover may be easily removed and replaced. The cover can be for
A unitary cover for grates comprising: a first member formed of a polymer having a poor memory and having a predetermined shape and bars and slots in said member; a fastening means formed integrally with said first member for attaching said first member to a slotted second member; said fastening mea
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