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20140310105114.0 |
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|aConcordance between the 1972 standard industrial code classification (SIC) system and the U.S. patent classificationn (USPC) system as it existed on 13/31/1996|fUnited States Department of Commarce, Patent and Trademark Office
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| 210 |
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|aWashington, D.C|cU.S. Patent and Trademark Office|d1997
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|a1 v.|d30 cm.|e+ 2 disk
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|aUnited States Department of Commerce|bPatent and Trademark Office
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| 801 |
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| 801 |
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|atw|b台經院|c19980409|gAACR2
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