|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 = '411') AND (category.subclass = '412') ORDER BY date ASC, patent, type|
Total of 1 patents found where: Class is '411'; Subclass is '412';
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|T / S||Patent||Date||Description||Patentee||Category||Assigned To|
|U||1,750,769||March 18, 1930||Insulator Pin
Steel pin with rolled threads and support on top of crossarm
|AUSTIN, Arthur O.
||Pin||The Ohio Brass Co.|
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