Patents Assigned to Spectrum Lines, Inc.
  • Pen
    Patent number: D613336
    Type: Grant
    Filed: May 4, 2009
    Date of Patent: April 6, 2010
    Assignee: Spectrum Lines, Inc.
    Inventor: Tsung-Hsien Yu
  • Pencil
    Patent number: D619168
    Type: Grant
    Filed: May 19, 2009
    Date of Patent: July 6, 2010
    Assignee: Spectrum Lines, Inc.
    Inventor: Tsung-Hsien Yu