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NTIS 바로가기국가/구분 | United States(US) Patent 등록 |
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국제특허분류(IPC7판) |
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출원번호 | US-0887874 (1978-03-17) |
발명자 / 주소 |
|
인용정보 | 피인용 횟수 : 3 인용 특허 : 0 |
A short length of copper pipe for being dropped into a water tank, so to retard against the growth of moss in the water; and means in a modified design of the device for forcing the water to circulate through the pipe in order to increase the efficiency thereof.
A plant growth inhibitor adapted for placement in a water container, comprising in combination a copper pipe and means for causing movement of said pipe in said water in response to water motion, wherein said means comprises a float oscillator mounted on one end of said pipe to urge said pipe to a v
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