作者: Ming-Deh Lee
DOI:
关键词: Partition (number theory) 、 Engineering 、 Calculator 、 Hook 、 Engineering drawing
摘要: An improved name card case includes a loose-leaf type partition disposed between the respective recesses of first cover and second cover. The has trigger portion hook. front action plate facing is configured to have shallow depression for receiving main frame calculator. also provided with notch, supporting column curved guide portion. By means having calculator thereon, divided into two parts. used position cards in When pulled down, thereon may be used, smoothly guided out case.