BUSINESS NOTEBOOK AND NOTEBOOK SET

摘要

PROBLEM TO BE SOLVED: To make a calendar formed by piling up calendar sheets in a business notebook be opened easily by detecting it by the touch of it.;SOLUTION: The calendar sheets 5 are made to be thicker and harder than diary sheets 4, and the calendar sheets 5 are arranged in the middle parts of the piled-up diary sheets 4.;COPYRIGHT: (C)2003,JPO