|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 = '169CA') ORDER BY date ASC, patent, type|
Total of 2 patents found where: Class is '123'; Subclass is '169CA';
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|T / S||Patent||Date||Description||Patentee||Category||Assigned To|
|U||437,685||October 7, 1890||Insulator
Coating on exterior of insulator to color code line
|GAYNOR, Thomas F.
||Coating||The Gaynor Electric Co.|
|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.
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