Patents Assigned to SHENZHEN JIENUOYI SCIENCE AND TECHNOLOGY CO., LTD
  • Electrical dental calculus remover
    Patent number: D855182
    Type: Grant
    Filed: January 31, 2019
    Date of Patent: July 30, 2019
    Assignee: SHENZHEN JIENUOYI SCIENCE AND TECHNOLOGY CO., LTD
    Inventor: Zongjie Ma