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"Comparison of IPC and USPC classification systems in patent prior art ..."
Christopher G. Harris, Robert Arens, Padmini Srinivasan (2010)
- Christopher G. Harris, Robert Arens, Padmini Srinivasan:
Comparison of IPC and USPC classification systems in patent prior art searches. PaIR@CIKM 2010: 27-32
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