Patents Assigned to Prod-Art Company Limited
  • Pill reminder
    Patent number: D441951
    Type: Grant
    Filed: September 13, 2000
    Date of Patent: May 15, 2001
    Assignee: Prod-Art Company Limited
    Inventor: Kwok Fu Cheng
  • Digital device for measuring distances on maps
    Patent number: D460701
    Type: Grant
    Filed: May 21, 2001
    Date of Patent: July 23, 2002
    Assignee: Prod-Art Company Limited
    Inventor: Kwok Fu Cheng