|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 = '493') ORDER BY date ASC, patent, type|
Total of 1 patents found where: Class is '493';
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|T / S||Patent||Date||Description||Patentee||Category||Assigned To|
|U||1,159,798||November 9, 1915||Insulating Tube
Tubes (insulating) made by winding long strips of paper (machine for making)
|REYNDERS, Arthur B.
||Wall Tube||Westinghouse Electric & Mfg. Co.|
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