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SELECT DISTINCT patent.*, YEAR(date) as year FROM patent WHERE (category = 'Roof') ORDER BY date ASC, patent, type

Total of 1 patents found where: Category is 'Roof';

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T / S	Patent	Date	Description	Patentee	Category	Assigned To
		1907
U	851,705	April 30, 1907	Insulator Roof entry insulator	STOTZ, Hugo	Roof

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