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Patents and How to Get One ─ A Practical Handbook
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出版日:2000/04/11 作者:U. s. Department of Commerce  出版社:Dover Pubns  裝訂:平裝
Handy official guide explains functions of the Patent and Trademark Office, describes a patent, defines such terms as "patent pending" and "patent applied for," discusses patent law, explains what ca
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