一种钻头无级调速结构

• Affilication of Author(s):机械与汽车工程学院
• Patent Coverage:国内
• Disigner of the Invention:叶盛,zhengjianxi,赖章鹏,洪浩
• Note:科研系统2021年9月份才录入
• Type of Patent:实用新型
• State of Patent:专利授权
• Application Number:201921512495.0
• Authorization number: CN211101736U
• Number of Inventors:5
• Service Invention or Not:no
• Application Date:2019-09-11
• Publication Date:2020-07-28
• Authorization Date:2020-07-28