Patent office classification: Its whats and whys

Peter Glickert

Journal of the American Society for Information Science, 1974, vol. 25, issue 5, 308-311

Abstract: To meet statutory requirements for searches, which are unique in their intellectual complexity and in their recall, precision and speed demands, the U.S. Patent Office has developed and maintains a manually‐accessed classification system for its 20 million patent documents. This ever‐expanding system has operated successfully for more than 75 years, and also performs administrative and awareness functions.

Date: 1974
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