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NTIS 바로가기국가/구분 | United States(US) Patent 등록 |
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국제특허분류(IPC7판) |
|
출원번호 | US-0931403 (1986-11-17) |
발명자 / 주소 |
|
인용정보 | 피인용 횟수 : 17 인용 특허 : 0 |
A roof ventilator closure assembly for mounting under a roof and including a door which slides within a framework to selectively cover and uncover an opening in the framework positioned in registry with the ventilator opening in the roof. The opening in the framework is covered by screen material to
A roof ventilation closure assembly comprising: an elongate plate member having opposed parallel tracks formed along opposed edges; an opening formed in said plate member at one end thereof; a door member positioned adjacent the surface of said plate and having opposed edges engaging the parallel tr
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