Search the Issued Patents and the Published Applications databases by "Current US Classification" and access full-text patents and published applications.
使用当前分类查找授权专利和公开专利申请数据库，并阅读全文专利以及公开专利申请文件；
The significance of classification and problems of current classification system of practice methods urge us to inspect afresh the classification system of practice methods.
练习法分类的重要性以及我国当前练习法分类体系所存在的问题，要求我们重新审视练习法分类体系。
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