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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 = '337') AND (category.subclass = '228') ORDER BY date ASC, patent, type

Total of 1 patents found where: Class is '337'; Subclass is '228';

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T / S Patent Date Description Patentee Category Assigned To
 1895
U Specimen known 538,090 April 23, 1895 Electric Cut-Out
Fuse cut-out for transformer (see patent 552,680)		 WAGNER, Robert A.
SCHWEDTMANN, Ferdinand
 Fuse Holder  

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