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Official catchword index to the International Classification of Patent.

Official catchword index to the International Classification of Patent.
紙図書
Morgan-Grampian Books1969.<M351-12>
国立国会図書館
  • 著者標目Council of Europe Committee of experts on Patents.

International classification of patents for invention under the European Convention of 19th December, 1954

International classification of patents for invention under the European Convention of 19th December, 1954
紙図書
prepared by the Classification Working Party of the Committee of Experts on patents of the Council of EuropeCouncil of Europe1963-
全国の図書館

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