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NTIS 바로가기국가/구분 | United States(US) Patent 등록 |
---|---|
국제특허분류(IPC7판) |
|
출원번호 | US-0213465 (1980-12-05) |
발명자 / 주소 |
|
출원인 / 주소 |
|
인용정보 | 피인용 횟수 : 52 인용 특허 : 1 |
Exchanger means for exchanging a first fluid with a second fluid, in varying proportions and employs a first duct, carrying the first fluid, a second duct carrying the second fluid, and a transfer chamber connected to both ducts, through which some, or all of the second fluid is able to be transferr
A vent means for buildings and the like said means comprising: ducting means defining separate first and second ducts side by side and having spaced apart parallel axes and having inside and outside ends; a fan mounting frame means attached on the inside end of said ducting means, and being releasab
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