|SELECT DISTINCT patent.*, YEAR(date) as year FROM patent WHERE (category = 'Heater') ORDER BY date ASC, patent, type|
Total of 1 patents found where: Category is 'Heater';
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|T / S||Patent||Date||Description||Patentee||Category||Assigned To|
|U||657,574||September 11, 1900||High Voltage Insulator
Heater (electric) imbedded in insulator body
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