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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 = '249') AND (category.subclass = '19') ORDER BY specimen ASC, date, patent, type

Total of 1 patents found where: Class is '249'; Subclass is '19';

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T / S Patent Date Description Patentee Category Assigned To
 1964
U 3,122,861 March 3, 1964 Field Replacement Block in Masonry Walls and Panels
Field Replacement of Glass Blocks
IDEN, Charles H.
OI Owens-Illinois Glass Co.

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