Title: Zhongguo zhuan li fa yan jiu yu li fa shi jian
Description: Ben shu zhu yao zhen dui wo guo zhuan li li fa ji qi wan shan jin xing yan jiu, dui wo guo zhuan li li fa jin cheng yu gai ge, "Zhuan li fa" di 4 ci xiu gai deng wen ti jin xing liao tan tao. tong shi shu li liao cong 1898 nian wo guo di 1 bu zhuan li bao hu fa gui "Zhen xing zhong gong yi gei jiang zhang cheng" dao zui jin "Zhuan li fa" di 4 ci xiu gai de zhuan li fa lü gui fan, zai shu zhong jin xing liao xiang xi lie ju.
Subjects: Patent laws and legislation
Places: China