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NTIS 바로가기국가/구분 | United States(US) Patent 등록 |
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국제특허분류(IPC7판) |
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출원번호 | US-0961669 (1978-11-17) |
발명자 / 주소 |
|
인용정보 | 피인용 횟수 : 18 인용 특허 : 0 |
An agricultural device which comprises three strata of soil air and water. The soil is retained on a permeable floor and spaced apart from the water. The floor is supported by hydrophilic columns which are received in the water. Water is transmitted through the hydrophilic columns, generally with ai
An agricultural device which comprises (a) a reservoir having a base and sides adapted to receive a strata of water; (b) a soil bed having a fluid permeable floor and walls defining a stratum of soil and defining between the soil stratum and the water stratum an air stratum, each distinct from the o
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