Lunch boxes and similar devices adapted to accommodate graphic data

作者: Cooper L

DOI:

关键词: SmoothnessType (model theory)Computer scienceCover (algebra)Operator (computer programming)Computer graphics (images)Engineering drawing

摘要: A lunch box or similar apparatus having the exposed outside surfaces thereof laminated with a smooth plastic of type capable applied thereto graphic data by means waxy crayon writing tool, which because smoothness cover member can be easily removed and reapplied at desire operator.

参考文章(5)
Beverly R Conolly, Artist{3 s carrying case ,(1969)
Howard Jonesi, Amusement and teaching device ,(1969)
Paul M Fristedt, Drawing board device ,(1967)
Wanda K Causer, Child's educational toy ,(1968)