浅谈机械领域专利创造性的OA答复——对“保护套管”发明专利案例的分析

Publisher: 国家哲学社会科学学术期刊数据库

E-ISSN: 10-1332|volume|2|52-55

ISSN: 10-1332

Source: 专利代理, Vol.volume, Iss.2, 2015-01, pp. : 52-55

Disclaimer: Any content in publications that violate the sovereignty, the constitution or regulations of the PRC is not accepted or approved by CNPIEC.

Previous Menu Next

Abstract