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    電學專利申請文件的撰寫
    圖書編號:28449
    電學專利申請文件的撰寫
    圖書簡介: 本書主要介紹發明素材的積累手段和撰寫專利申請文件的技巧和經驗。最后給出四篇專利申請的實際例子,供讀者參考。
    出版時間:2007-3-1
    圖書定價: 15元

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