| 摘要 |
PROBLEM TO BE SOLVED: To increase the number of portions capable of inserting and displaying an advertisement in a calendar for a long period of time. SOLUTION: In this stair-type calendar, the lower ends of sheets constituting a calendar or both upper and lower ends of them are shifted to be bound, and stair-type advertisement spaces are provided to perform side or saddle stitch bookbinding so as to make it possible to see the advertisement of one or more stages at a glance. COPYRIGHT: (C)2003,JPO
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