| 摘要 |
PROBLEM TO BE SOLVED: To compose one dial button of a portable telephone for example by 5 buttons. SOLUTION: One set of dial buttons 16 is composed of one first push-button 21, and four second push-buttons 22 parted from each other and symmetrically disposed around the first push-button 21. In this case, the one first push-button 21 and the four second push-buttons 22 are pushed by one finger independently each other. COPYRIGHT: (C)2006,JPO&NCIPI
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