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Pu Wenjun

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Patents Applicationslast 30 patents

  • Information Patent Application

    Keyboard instrument having pedal mechanism
    • Publication number 20040099133
    • Publication date May 27, 2004
    • Wenjun Pu
    • G10 - MUSICAL INSTRUMENTS ACOUSTICS
  • Information Patent Application

    Upright keyboard instrument
    • Publication number 20030177885
    • Publication date Sep 25, 2003
    • Pu Wenjun
    • G10 - MUSICAL INSTRUMENTS ACOUSTICS
  • Information Patent Application

    Keyboard instrument
    • Publication number 20030131711
    • Publication date Jul 17, 2003
    • Pu Wenjun
    • G10 - MUSICAL INSTRUMENTS ACOUSTICS