검색연산자 | 기능 | 검색시 예 |
---|---|---|
() | 우선순위가 가장 높은 연산자 | 예1) (나노 (기계 | machine)) |
공백 | 두 개의 검색어(식)을 모두 포함하고 있는 문서 검색 | 예1) (나노 기계) 예2) 나노 장영실 |
| | 두 개의 검색어(식) 중 하나 이상 포함하고 있는 문서 검색 | 예1) (줄기세포 | 면역) 예2) 줄기세포 | 장영실 |
! | NOT 이후에 있는 검색어가 포함된 문서는 제외 | 예1) (황금 !백금) 예2) !image |
* | 검색어의 *란에 0개 이상의 임의의 문자가 포함된 문서 검색 | 예) semi* |
"" | 따옴표 내의 구문과 완전히 일치하는 문서만 검색 | 예) "Transform and Quantization" |
다음과 같은 기능을 한번의 로그인으로 사용 할 수 있습니다.
NTIS 바로가기국가/구분 | United States(US) Patent 등록 |
---|---|
국제특허분류(IPC7판) | A47G-029/02 |
미국특허분류(USC) | 248/2404 ; 108/134 ; 292/263 |
출원번호 | US-0317370 (1989-03-01) |
발명자 / 주소 | |
인용정보 | 피인용 횟수 : 11 인용 특허 : 0 |
Improved support for reclinable boards that consists of two arms articulated to each other, forming a folding square and presenting jamming and releasing systems, that has been structured for reliable practical positions. Simple and functional constitution that permits reclining the board in different positions. For achieving these, the support has two arms (1 and 2) joined to each other in which common point (3) joins a crosspiece (10) which through its other end joins the axis (8) where a leg compass is joined (4 and 5) through which ends (6 and 7) are...
A support for a reclinable object comprising two arms each having first and second ends, the first ends of said arms being pivotally joined together for movement about a common axis between folded and extended positions, releasable support means for maintaining said arms in said extended position, said releasable support means including first and second legs each having first and second ends, said respective first ends of each said leg being pivotally attached on a said respective arm and said respective second ends of said legs being pivotally connected...