| 摘要 |
PROBLEM TO BE SOLVED: To provide a system notebook refill capable of easily turning over a page and attempting to increase in storing. SOLUTION: Notches are obliquely provided respectively on upper and lower parts of ring holes of a refill 2. The notches are for example, notches 3 with right-angled triangles provided on the upper and lower parts. COPYRIGHT: (C)2007,JPO&INPIT
|
