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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 = '119') AND (category.subclass = '903') ORDER BY date ASC, patent, type

Total of 1 patents found where: Class is '119'; Subclass is '903';

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T / S Patent Date Description Patentee Category Assigned To
 1928
U 1,685,663 September 25, 1928 Insulated Perch for Preventing Bird Trouble in Connection with Electrical Transmission Lines
Arrangement of a pintype insulator and specially designed conductor above a suspension string to discourage birds from sitting above suspension string		 AUSTIN, Arthur O.
 Miscellaneous The Ohio Brass Co.

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