公开(公告)号：US4537576A

公开(公告)日：1985-08-27

申请号：US631162

申请日：1984-07-16

申请人： Howard I. Thorsheim ,  Bruce B. Roberts

发明人： Howard I. Thorsheim ,  Bruce B. Roberts

IPC分类号： G09B1/00 ,  G09B1/22

CPC分类号： G09B1/22 ,  G09B1/00 ,  B42B7/00 ,  B42D1/001 ,  B42D1/004

摘要： An educational book providing interaction between graphic information contained on reference elements rotatably attached to a base leaf and a second set of graphic information contained on apertured leaves. The apertured leaves superimpose the base leaf and reference elements, such that the apertures are visually aligned with the reference elements. The second set of graphic information areas are juxtaposed with respect to the apertures of the leaves to combined with the graphic information of the reference elements visible through said apertures. To maintain this alignment, the apertured leaves and base leaf are rotatably bound together at one end by a binding mechanism.

摘要翻译： 提供包含在可旋转地附接到基础叶片的参考元件上的图形信息与包含在有孔叶片上的第二组图形信息之间的交互的教育书籍。 有孔的叶片叠加基部叶片和参考元件，使得孔眼与参考元件目视对准。 第二组图形信息区域相对于叶片的孔并置，与通过所述孔可见的参考元件的图形信息相结合。 为了保持该对准，有孔的叶片和基底叶片在一端通过结合机构可旋转地结合在一起。

公开(公告)号：US1878053A

公开(公告)日：1932-09-20

申请号：US41641729

申请日：1929-12-26

申请人： HENRY COE LANPHER ,  BRUCE B ROBERTS

发明人： WINGER STOVER C

IPC分类号： B25B15/04

CPC分类号： B25B15/04 ,  Y10T408/643