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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 = '123') AND (category.subclass = '70R') ORDER BY date ASC, patent, type

Total of 1 patents found where: Class is '123'; Subclass is '70R';

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T / S Patent Date Description Patentee Category Assigned To
 1929
U 1,702,236 February 12, 1929 High Tension Insulator Construction
Suspension disk with ""capacity gland"" to prevent electrical streamers and provide a balanced electrical field		 AUSTIN, Arthur O.
 Suspension The Ohio Brass Co.

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