|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 = '264') AND (category.subclass = '639') ORDER BY date ASC, patent, type|
Total of 1 patents found where: Class is '264'; Subclass is '639';
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|T / S||Patent||Date||Description||Patentee||Category||Assigned To|
|U||2,346,620||April 11, 1944||Method of Forming Insulator Bodies
Method to mix water with dry ingredients to form clay of the proper water content
|SKIPPER, Edward M.
||Clay||Locke Insulator Corp.|
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