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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 = 'LEONARDSON') AND (first_name = 'John M.') ORDER BY date ASC, patent, type

Total of 1 patents found where: Last Name is 'LEONARDSON'; First Name is 'John M.';

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T / S Patent Date Description Patentee Category Assigned To
 1886
U 347,943 August 24, 1886 Insulator for Electric Wires
Self-tying with metal cam lever		 LEONARDSON, John M.
 Self-tying Miscellaneous  

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