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NTIS 바로가기국가/구분 | United States(US) Patent 등록 |
---|---|
국제특허분류(IPC7판) |
|
출원번호 | US-0909612 (1978-05-26) |
발명자 / 주소 |
|
인용정보 | 피인용 횟수 : 9 인용 특허 : 1 |
A flexible portfolio for flat planar objects such as works of art, acetate sheets, posters, pieces of paperboard or cardboard such as signs, illustrations, etc. The portfolio includes two rectangular flexible panels which are equal sized and in registration. Three edges of one panel are secured to t
A flexible portfolio for flat planar objects such as works of art which comprises first and second substantially rectangular flexible panels, said panels being of substantially equal size and being in registration, means securing three edges of the first panel to the respective opposed three edges o
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