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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 = 'SHOWMAN') AND (first_name = 'Robert L.') ORDER BY date ASC, patent, type

Total of 1 patents found where: Last Name is 'SHOWMAN'; First Name is 'Robert L.';

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T / S Patent Date Description Patentee Category Assigned To
 1960
U 2,935,553 May 3, 1960 Electrical Knob Insulator
Nail-knob with center bushing to secure nail		 SHOWMAN, Robert L.
 Knob A. B. Chance Co.

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