求翻译：方先鹿有个同学住在他家楼上，平时回家后常常因忘了拔钥匙被母亲批评。方先鹿当时就想能否改装锁，解决这一难题。2010年8月，方先鹿开始进行研究，2011年8月，研究出了“防忘记拔钥匙的锁”，并于当年申请了国家发明专利，并获得实用新型专利权证书，正在申请“含金量”更高的发明型专利。是什么意思？

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First deer a classmate to live upstairs in his home, usually after going home often forgot to remove the key by her mother criticized. First deer at that time thought can modify locked, a solution to this problem. In August 2010, the party initiated a study of deer, in August 2011, came up with "ant