Search the Insulator Patent Reference Library

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

Total of 2 patents found where: Category is 'Split';

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T / S	Patent	Date	Description	Patentee	Category	Assigned To
		1870
U	109,879	December 6, 1870	Improvement in Insulators for Telegraph Wires Split insulator protected by metal cage	DE MONTUFAR, Manuel	Split
		1890
U	419,642	January 21, 1890	Insulator for Electric Wires Split ring with split ring holder and lag screw	CORNOG, Isaac P.	Split

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