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-0052865 (1987-05-19) |
우선권정보 | JP-0113874 (1986-05-19); JP-0200788 (1986-12-29); JP-0002429 (1987-01-13); JP-0014817 (1987-01-23) |
발명자 / 주소 |
|
출원인 / 주소 |
|
인용정보 | 피인용 횟수 : 5 인용 특허 : 5 |
A copyable blackboard has: a written member on which a picture including such as characters or figures is depicted a first carrier for carrying the written member, a light source for irradiating light to the picture on a portion of the written member located at a predetermined position on the writte
A copyable blackboard comprising: a written member on which is depicted a picture comprising data such as characters or figures; first carrier means for carrying said written member; light source for irradiating light to said picture on a portion of said written member to generate an optical signal
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