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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 = '65') AND (category.subclass = '57') ORDER BY date ASC, patent, type

Total of 2 patents found where: Class is '65'; Subclass is '57';

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T / S Patent Date Description Patentee Category Assigned To
 1939
U 2,145,351 January 31, 1939 Hollow Glass Building Block
Blocks with recess for molten glass to bond two halves together		 HAZELTON, Benjamin F.
 OI Owens-Illinois Glass Co.
U 2,182,986 December 12, 1939 Method and Automatic Device for Sealing Glass Block Halves Together
Machine to seal glass block halves together		 HOGE, John R.
SOUBIER, Leonard D.
MANKIN, Lawrence O.
 OI Owens-Illinois Glass Co.

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