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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 = '106') AND (category.subclass = '233') ORDER BY date ASC, patent, type

Total of 1 patents found where: Class is '106'; Subclass is '233';

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T / S Patent Date Description Patentee Category Assigned To
 1896
U 566,045 August 18, 1896 Insulator for Electrical Purposes
Protective shield of metal with non-conducting enameled coating		 WHITAKER, Alfred J. P.
TREHARNE, Frederick G.
 Protective Shield  

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