摘要
检索了铁路货车车钩技术的相关专利,对该领域专利的申请量、申请区域、申请人及技术领域的发展趋势进行了分析,并基于专利回顾了车钩技术的发展历程。
The relevant patents of railway freight car coupler technologies are searched.The number of application,the districts of application,applicants and development trend of the technical field of the patents are analyzed.And the development history of the coupler technology is reviewed on the basis of the patents.
出处
《铁道车辆》
2015年第12期63-68,6,共6页
Rolling Stock
关键词
车钩
发展趋势
专利分析
coupler
development trend
patent analysis
