| 摘要 |
Folder, comprising in the first cover (2) as side wall: a hinge or spine (15) connected thereto; a second cover (3) connected on the other side to the spine; on or more ring elements (4, 5) arranged between both covers for accommodating sheets of paper to be provided with one or more holes, wherein the ring element is guidable along one of the covers by means of guiding means. |
