Patent Office Search Files: A Tool for Historical Research and Technological Development

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Science  31 Aug 1962:
Vol. 137, Issue 3531, pp. 672-673
DOI: 10.1126/science.137.3531.672


The classified search files of the U. S. Patent Office are useful for locating a desired patent record. The method of constructing these files, and the tools needed to enter the classification scheme at the proper locus, are described.