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

Total of 1 patents found where: Assigned To is 'American Telegraph & Telephone Co.';

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T / S Patent Date Description Patentee Category Assigned To
 1927
U Specimen known 1,621,530 March 22, 1927 Dead-Ending Clamp
Dead ending clamp for long span crossings		 FITZPATRICK, Paul G.
 Hardware American Telegraph & Telephone Co.

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