Patents Assigned to Appa Technology Corp.
  • Electrical multimeter with a stand
    Patent number: D446137
    Type: Grant
    Filed: October 6, 2000
    Date of Patent: August 7, 2001
    Assignee: Appa Technology Corp.
    Inventor: Shang-Wen Chang
  • Portable electrical multimeter
    Patent number: D419464
    Type: Grant
    Filed: January 20, 1999
    Date of Patent: January 25, 2000
    Assignee: APPA Technology Corp.
    Inventor: Shang-Wen Chang
  • Induction type electrical multimeter
    Patent number: D434683
    Type: Grant
    Filed: December 7, 1999
    Date of Patent: December 5, 2000
    Assignee: Appa Technology Corp.
    Inventor: Shang-Wen Chang