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NTIS 바로가기국가/구분 | United States(US) Patent 등록 |
---|---|
국제특허분류(IPC7판) |
|
출원번호 | US-0756594 (1985-07-19) |
발명자 / 주소 |
|
인용정보 | 피인용 횟수 : 30 인용 특허 : 3 |
An improved two-piece lock for securing polymeric sheeting for use in covering greenhouses. The lock has an elongated lower member affixed to the frame of the greenhouse and one or more layers of polymeric sheeting are held in the lock between the lower member and an upper member. The upper member h
An improved two-piece lock for securing polymeric sheeting for use in covering greenhouses and the like of the type which has a lower part which is affixed to a greenhouse cross-member and which is overlayed with one or more layers of polymeric sheeting and which lower member mates with an upper mem
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