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NTIS 바로가기국가/구분 | United States(US) Patent 등록 |
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국제특허분류(IPC7판) |
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출원번호 | US-0137514 (1980-04-04) |
발명자 / 주소 |
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인용정보 | 피인용 횟수 : 7 인용 특허 : 1 |
A sound barrier is provided for use in front of a building opening, such as a sliding or inwardly hinged window. The sound barrier comprises a substantially planar panel and a frame formed with elongate members, each member having a channel opening. A barrier member mounted circumferentially of the
A ventilated sound barrier for passing air through an opening of a building while impeding the passage of sound waves, said barrier comprising a substantially planar panel circumscribed by a frame formed of channel members having side walls which define U-shaped openings to one side of said panel; a
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