최소 단어 이상 선택하여야 합니다.
최대 10 단어까지만 선택 가능합니다.
다음과 같은 기능을 한번의 로그인으로 사용 할 수 있습니다.
NTIS 바로가기국가/구분 | United States(US) Patent 등록 |
---|---|
국제특허분류(IPC7판) |
|
출원번호 | US-0928997 (1992-08-12) |
발명자 / 주소 |
|
인용정보 | 피인용 횟수 : 35 인용 특허 : 0 |
A playpen structure employing a plurality of improved joints. The playpen structure has four pairs of rails. Rails of each pair are joined together by means of a first joint. Each pair of rails is joined to an adjacent pair of rails by means of a second joint. Each of four columns is attached to a c
A playpen structure, comprising: four pairs of rails, wherein said rails of each said pair are joined together by means of a first joint, and each said pair of rails is joined to an adjacent pair of rails by means of a second joint; four columns each having a first end attached to a corresponding on
※ AI-Helper는 부적절한 답변을 할 수 있습니다.