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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 = '24') AND (category.subclass = '136A') ORDER BY date ASC, patent, type

Total of 1 patents found where: Class is '24'; Subclass is '136A';

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T / S Patent Date Description Patentee Category Assigned To
 1905
U Specimen known 798,235 August 29, 1905 Insulator
CD 141.7		 TWIGGS, William R.
 Insulator  

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