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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 = '156.23') ORDER BY date ASC, patent, type

Total of 1 patents found where: Class is '106'; Subclass is '156.23';

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T / S Patent Date Description Patentee Category Assigned To
 1884
U 308,778 December 2, 1884 Composition for Making Non-Conducting Handles for Sad-Irons, &c.
Mixture of mica and glue to make solid non-conducting composition handles		 LEE, Charles Tennant
 Composition  

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