|SELECT DISTINCT patent.*, YEAR(date) as year FROM patent LEFT JOIN category ON category.patent = patent.patent AND category.type = patent.type WHERE (category.class = '361') AND (category.subclass = '149') ORDER BY date ASC, patent, type|
Total of 1 patents found where: Class is '361'; Subclass is '149';
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|T / S||Patent||Date||Description||Patentee||Category||Assigned To|
|U||512,656||January 9, 1894||Relay
Method of making a telegraph relay more responsive
|LOCKE, Fred M.
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