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  • × year_i:[1990 TO 2000}
  1. Vijvers, W.G.: ¬The International Patent Classification as a search tool (1990) 8.66 
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  2. Schramm, R.: Patentinformation (1997) 8.66 
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  3. Wittmann, A.: Classifying and indexing of patent documents : a retired patent documentalist looks back (1994) 8.66 
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  4. Nishikawa, M.: Usefulness of hybrid systems in computerised searches (1990) 8.66 
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  5. Rozov, B.: About patent classification (1993) 8.66 
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  6. Faucompre, P.; Quoniam, L.; Dou, H.: ¬The function-application relation through a link between classification and indexing (1997) 8.66 
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  7. Faucompre, P.; Quoniam, L.; Dou, H.: ¬An effective link between science and technology (1997) 8.66 
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  8. Rampelmann, J.: Classification tools at the EPO (1996) 8.66 
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  9. Kunin, S.: IPC and the new millennium : challenge and opportunity (1999) 8.66 
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