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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 = 'DUMBOLTON') AND (first_name = 'Perry S.') ORDER BY date ASC, patent, type

Total of 1 patents found where: Last Name is 'DUMBOLTON'; First Name is 'Perry S.';

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T / S Patent Date Description Patentee Category Assigned To
 1909
U 937,736 October 19, 1909 Insulator
Pin with spring to fit into threads
DUMBOLTON, Perry S.
FRANZ, Frank
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