发明名称 Flash card management apparatus
摘要 A flash card management apparatus has a progression of compartments that govern or direct which cards are reviewed at a given drill session. When the progression is ordered by card capacities, a given card will come up for review possibly at each drill session for the first few sessions, and then come up for review with ever decreasing frequency thereafter. The use of the management apparatus will assure that each card will be not only periodically reviewed, but also reviewed a fixed number of times before it is put on the side.
申请公布号 US6216869(B1) 申请公布日期 2001.04.17
申请号 US19990266311 申请日期 1999.03.11
申请人 ZHANG LI FENG 发明人 ZHANG LI FENG
分类号 B42F17/12;(IPC1-7):B65D85/00 主分类号 B42F17/12
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