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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 = 'DUFFY') AND (first_name = 'Ralph E.') ORDER BY date ASC, patent, type

Total of 1 patents found where: Last Name is 'DUFFY'; First Name is 'Ralph E.';

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T / S Patent Date Description Patentee Category Assigned To
 1929
U 1,738,875 December 10, 1929 Insulator Pin
Wooden pin strengthened with a metal collar		 DUFFY, Ralph E.
 Pin  

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