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SELECT DISTINCT patent.*, YEAR(date) as year FROM patent LEFT JOIN name ON name.patent = patent.patent AND name.type = patent.type WHERE (last_name = 'POLK') AND (first_name = 'Robert H.') ORDER BY date ASC, patent, type

Total of 1 patents found where: Last Name is 'POLK'; First Name is 'Robert H.';

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T / S Patent Date Description Patentee Category Assigned To
 1903
U Specimen known 724,329 March 31, 1903 Insulator
Self-tying nail-knob with three flanges on top for tying wire around the knob and saw-toothed bottom edge to prevent the knob from turning.		 POLK, Robert H.
 Knob  

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