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NTIS 바로가기국가/구분 | United States(US) Patent 등록 |
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국제특허분류(IPC7판) |
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출원번호 | US-0637398 (1984-08-03) |
발명자 / 주소 |
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출원인 / 주소 |
|
인용정보 | 피인용 횟수 : 174 인용 특허 : 0 |
A face mask for pressure breathing. The mask has a body with a sealing boundary shaped to fit over the bridge of a wearer\s nose, downward past the sides of his nose and mouth and across his mental protuberance. The sealing boundary includes a reflective primary seal and a secondary seal. The reflec
A face mask for pressure breathing comprising: a body having a sealing boundary shaped to fit over the bridge of the wearer\s nose, downward past both sides of his nose and mouth, and across his mental protuberance, so as to make a fluid sealing contact along said boundary, said sealing boundary inc
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