|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 = '74') AND (category.subclass = '553') ORDER BY date ASC, patent, type|
Total of 1 patents found where: Class is '74'; Subclass is '553';
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|T / S||Patent||Date||Description||Patentee||Category||Assigned To|
|U||1,446,067||February 20, 1923||Method of Connecting Insulator Units
Suspension, method of cementing pin
|REAGAN, Frank H.
||Suspension||Locke Insulator Corp.|
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