Patents Assigned to Coretech Co., Ltd.
  • Ultrasonic massager
    Patent number: D467347
    Type: Grant
    Filed: March 27, 2002
    Date of Patent: December 17, 2002
    Assignee: Coretech Co., Ltd.
    Inventor: Seong-Seok Yang
  • Ultrasonic massager
    Patent number: D470239
    Type: Grant
    Filed: April 5, 2002
    Date of Patent: February 11, 2003
    Assignee: Coretech Co., Ltd.
    Inventor: Seong-Seok Yang