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根据国家知识产权局专利检索网提供的数据,在“拖拉机”词条下显示的近几年我国已授权各类专利的具体数据如下。2009—2012年,我国已授权各类专利分别为297项(含已公告的发明专利)、375项、398项和471项,其中国外企业在我国授权或公告的专利分别为7项、11项、10项和17项,分别占总量的2.4%、2.9%、2.5%和3.6%;国内职务
According to the data provided by the Patent Search Network of the State Intellectual Property Office, the specific data of various patents that China has authorized in recent years under the heading “Tractor ” are as follows. From 2009 to 2012, China has granted 297 patents (including announced invention patents), 375 patents, 398 patents and 471 patents. Among which, 7 patents and 11 patents were authorized or announced by foreign enterprises in China respectively , 10 items and 17 items, accounting for 2.4%, 2.9%, 2.5% and 3.6% of the total respectively; domestic posts