|국가/구분||United States(US) Patent 등록|
|미국특허분류(USC)||428/178 ; 52/616 ; 52/618 ; 350/160R|
|발명자 / 주소|
|인용정보||피인용 횟수 : 55 인용 특허 : 0|
A panel of spaced, parallel, translucent, outer sheets of set plastic material with an inner sheet of corrugated sheet plastic disposed therebetween with the crests of the corrugations at the opposite faces of the corrugated sheet being engaged with, and secured in fixed relation to, adjacent outer sheets, respectively. Each corrugation has alternate show areas and shade areas. The show areas are coated with material which reflects light or impedes the passage of light therethrough. The shade areas are generally uncoated so that, relative to the show are...
A structural unit comprising: a first sheet of radiation transmitting material, at least part of which is translucent; a second sheet of radiation transmitting material, at least part of which is translucent and part of which is radiation reflective; said second sheet being corrugated to present at one face alternate corrugation crests and valleys with the bottoms of the valleys at each of its faces being the crests at the opposite of its faces; said second sheet being disposed with said one face facing toward said first sheet and with said crests juxtap...