|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 = '264') AND (category.subclass = '332') ORDER BY date ASC, patent, type|
Total of 1 patents found where: Class is '264'; Subclass is '332';
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|T / S||Patent||Date||Description||Patentee||Category||Assigned To|
|U||907,155||December 22, 1908||Manufacture of Spar Insulators
Feldspar insulator material (see reissue 12,992 on 7-13-1909)
|LOCKE, Fred M.
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