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

Total of 1 patents found where: Assigned To is 'Marshall Lefferts';

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T / S Patent Date Description Patentee Category Assigned To
 1870
U 99,873 February 15, 1870 Improvement in Insulator for Telegraphs
Self-tying via cam devise to hold wire with cap covering		 FINLEY, Stephen L.
 Self-tying Miscellaneous 1/2 to Marshall Lefferts

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