|SELECT DISTINCT patent.*, YEAR(date) as year FROM patent WHERE (category = 'Roof') ORDER BY type ASC, date, patent|
Total of 1 patents found where: Category is 'Roof';
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|T / S||Patent||Date||Description||Patentee||Category||Assigned To|
|U||851,705||April 30, 1907||Insulator
Roof entry insulator
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