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NTIS 바로가기국가/구분 | United States(US) Patent 등록 |
---|---|
국제특허분류(IPC7판) |
|
출원번호 | US-0994633 (1992-12-21) |
발명자 / 주소 |
|
인용정보 | 피인용 횟수 : 34 인용 특허 : 0 |
A foldable frame assembly for a children\s playpen, including an upper foldable rail mechanism composed of four upper rails each of which is foldable at a joint thereof, and a lower foldable rail mechanism composed of a chassis seat and four lower rails pivotally connected therewith in a radial patt
A foldable frame assembly for a children\s playpen, comprising four leg supports four upper rails pivotally connected with said leg supports, a chassis seat, four lower rails the inner ends of which are pivotally connected with said chassis seat in a radial pattern, and two L-shaped members pivotall
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