|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 = '409') AND (category.subclass = '301') ORDER BY date ASC, patent, type|
Total of 1 patents found where: Class is '409'; Subclass is '301';
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|T / S||Patent||Date||Description||Patentee||Category||Assigned To|
|U||2,181,810||November 28, 1939||Glass Block Trimmer
Trimmer to remove excess bonding agent from glass blocks
|HAWK, Charles E.
||OI||Owens-Illinois Glass Co.|
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