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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 = '241') ORDER BY date ASC, patent, type

Total of 2 patents found where: Class is '106'; Subclass is '241';

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T / S Patent Date Description Patentee Category Assigned To
 1869
U Specimen known 87,187 February 23, 1869 Improved Composition Insulator for Telegraph and other Electric Conductors
Composition material of silica, gum shellac etc. molded		 MERRICK, JR., John M.
 Composition  
 1888
U Specimen known 389,519 September 11, 1888 Composition of Matter
Composition material composed of mica and shellac that can be molded (Rick Soller's threaded pin-type specimen)		 LEE, Charles Tennant
 Composition  

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