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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 = '115K') ORDER BY date ASC, patent, type

Total of 2 patents found where: Class is '24'; Subclass is '115K';

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T / S Patent Date Description Patentee Category Assigned To
U 1,028,104 June 4, 1912 Strain Insulator
Strain type
Strain The Peru Electric Mfg. Co.
U Specimen known 1,110,934 September 15, 1914 Insulator
Suspension disk
HEWLETT, Edward M.
Suspension General Electric Co.

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