TREA

SHENZHEN WANG LING SCIENCE AND TECHNOLOGY DEVELOPMENT CO., LTD.

Follow

Organization

  • GUANGDONG, CN
Organizations

Patents Grantslast 30 patents

  • Information Patent Grant

    Braille writing device capable of processing information
    • Patent number 8,342,846
    • Issue date Jan 1, 2013
    • Shenzhen Wang Ling Science and Technology Development Co., Ltd.
    • Yimwai Yau
    • G09 - EDUCATION CRYPTOGRAPHY DISPLAY ADVERTISING SEALS
  • Information Patent Grant

    Multi-functional cover
    • Patent number 7,618,065
    • Issue date Nov 17, 2009
    • Shenzhen Wang Ling Science and Technology Development Co., Ltd.
    • Yimwai Yau
    • B42 - BOOKBINDING ALBUMS FILES SPECIAL PRINTED MATTER
  • Information Patent Grant

    Information book with PDA and multiple foldable pieces
    • Patent number 7,540,379
    • Issue date Jun 2, 2009
    • Shenzhen Wang Ling Science and Technology Development Co., Ltd.
    • Yimwai Yau
    • B42 - BOOKBINDING ALBUMS FILES SPECIAL PRINTED MATTER

Patents Applicationslast 30 patents

  • Information Patent Application

    Braille Writing Apparatus With Information Processing Function
    • Publication number 20090004632
    • Publication date Jan 1, 2009
    • Shenzhen Wang Ling Science and Technology Development Co., LTD.
    • Yimwai Yau
    • G09 - EDUCATION CRYPTOGRAPHY DISPLAY ADVERTISING SEALS
  • Information Patent Application

    Adjustable Document File Binding Device
    • Publication number 20080050204
    • Publication date Feb 28, 2008
    • Shenzhen Wang Ling Science and Technology Development Co., Ltd.
    • Yimwai Yau
    • B42 - BOOKBINDING ALBUMS FILES SPECIAL PRINTED MATTER
  • Information Patent Application

    Information Book With Pda And Multiple Foldable Pieces
    • Publication number 20070199851
    • Publication date Aug 30, 2007
    • SHENZHEN WANG LING SCIENCE AND TECHNOLOGY DEVELOPMENT CO., LTD.
    • Yimwai Yau
    • B42 - BOOKBINDING ALBUMS FILES SPECIAL PRINTED MATTER