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SELECT DISTINCT patent.*, YEAR(date) as year FROM patent LEFT JOIN name ON name.patent = patent.patent AND name.type = patent.type LEFT JOIN category ON category.patent = patent.patent AND category.type = patent.type WHERE (category.class = '337') AND (category.subclass = '283') ORDER BY last_name ASC, first_name, date, patent, type

Total of 1 patents found where: Class is '337'; Subclass is '283';

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T / S Patent Date Description Patentee Category Assigned To
 WAGNER, Robert A.
SCHWEDTMANN, Ferdinand
U Specimen known 552,680 January 7, 1896 Electric Cut-Out and Insulator
Cut-out for transformer mounted on and integral to the transformer. (see patent 538,090)		 WAGNER, Robert A.
SCHWEDTMANN, Ferdinand
 Fuse Holder  

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