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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 = '29') AND (category.subclass = '868') ORDER BY date ASC, patent, type

Total of 1 patents found where: Class is '29'; Subclass is '868';

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T / S Patent Date Description Patentee Category Assigned To
 1942
U Specimen known 2,299,960 October 27, 1942 Bracket and Method of Transposing Wires
Transposition bracket		 BREWSTER, Truman P.
MCKAHAN, Alexander C.
 Transposition  

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