Patents by Inventor Feiyu Long

Feiyu Long 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).

  • Steel tongue drum
    Patent number: D923695
    Type: Grant
    Filed: January 29, 2021
    Date of Patent: June 29, 2021
    Assignee: DONGGUAN MANZHUSHAHUA MUSICAL INSTRUMENT MANUFACTURING CO., LTD.
    Inventors: Feiyu Long, Xiaojin Cai
  • Steel tongue drum
    Patent number: D953411
    Type: Grant
    Filed: January 19, 2021
    Date of Patent: May 31, 2022
    Assignee: DONGGUAN MANZHUSHAHUA MUSICAL INSTRUMENT MANUFACTURING CO. LTD.
    Inventors: Feiyu Long, Xiaojin Cai