Patents Assigned to Tung Yung Stationery Manufactory Limited
  • Pencil sharpener
    Patent number: D441796
    Type: Grant
    Filed: July 13, 2000
    Date of Patent: May 8, 2001
    Assignee: Tung Yung Stationery Manufactory Limited
    Inventor: Siu-Leung Chan
  • Paper punch
    Patent number: D445832
    Type: Grant
    Filed: August 29, 2000
    Date of Patent: July 31, 2001
    Assignee: Tung Yung Stationery Manufactory Limited
    Inventor: Siu-Leung Chan
  • Stapler
    Patent number: D471414
    Type: Grant
    Filed: May 16, 2002
    Date of Patent: March 11, 2003
    Assignee: Tung Yung Stationery Manufactory Limited
    Inventor: Siu-Leung Chan