Patents by Inventor Quannan Ma

Quannan Ma has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Handheld vacuum cleaner
    Patent number: D855909
    Type: Grant
    Filed: August 11, 2017
    Date of Patent: August 6, 2019
    Assignee: Suzhou KVC Electric Co., Ltd.
    Inventor: Quannan Ma
  • Hand-held vacuum cleaner
    Patent number: D867694
    Type: Grant
    Filed: January 15, 2018
    Date of Patent: November 19, 2019
    Assignees: Suzhou KVC Electric Co., Ltd, MPOW TECHNOLOGY CO., LIMITED
    Inventor: Quannan Ma