International patent classification.

出版社:[Geneva, Switzerland] : World Intellectual Property Organization ; München : C. Heymanns Verlag, 19
ISBN:Y2.20
出版年:1979
作者:World Intellectual Property Organization.
资源类型:图书
细分类型:西文文献
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International patent classification.

  • 作者:World Intellectual Property Organization.
  • 出版社:[Geneva, Switzerland] : World Intellectual Property Organization ; München : C. Heymanns Verlag, 19
  • 出版年:1979

International patent classification.

  • 作者:World Intellectual Property Organization.
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International patent classification.

  • 作者:World Intellectual Property Organization.
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Official catchword index to the 3rd ed. (1979) of the international patent classification.

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