支持二目逻辑运算符AND、OR。 多个检索词之间用空格间隔,如:智能手机。 系统默认二目逻辑运算符是AND,如输入智能手机,系统按照智能AND 手机进行检索 ...
一、 凡本系统注明“国家知识产权局”、“专利检索及分析”的所有作品,其版权属于国家知识产权局和本系统(pss-system.cnipa.gov.cn)所有。其他媒体、网站或 ...
18 Oct 2019 ... 网 址:http://www.ipph.cn ... Chapter 1 Inventions-Creations for Which No Patent Right shall be ... The international exhibitions sponsored by the Chinese Gov- ... method and naturally existing Yuhua stones,etc.,shall not be the ... down;. (2)where the content of the design cannot be correctly expressed.