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SELECT DISTINCT patent.*, YEAR(date) as year FROM patent WHERE (assigned_to = 'Greenfield & Co.') ORDER BY date ASC, patent, type

Total of 1 patents found where: Assigned To is 'Greenfield & Co.';

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T / S Patent Date Description Patentee Category Assigned To
 1887
U 369,447 September 6, 1887 Insulator
Cleat - clamp type with slotted cylinder and screw eye		 GREENFIELD, Edwin T.
 Cleat Greenfield & Co.

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