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-0075936 (1979-09-17) |
우선권정보 | CH-0014303 (1977-11-22) |
발명자 / 주소 |
|
출원인 / 주소 |
|
인용정보 | 피인용 횟수 : 20 인용 특허 : 1 |
A door is disclosed which is primarily intended for application as a door being resistant to fire. This door having a more particularly metal frame, whereby disposed on the door frame is a material which foams under the effect of an increased temperature. Said material is applied in the form of a st
A door for separating two rooms and comprising: a frame member having a side which, in use, is presented to one of the two rooms and also having a marginal region, adjacent said side, which is generally U-shaped in cross-section, that surface of the marginal region which forms the base of the U-shap
※ AI-Helper는 부적절한 답변을 할 수 있습니다.