Search the Insulator Patent Reference Library

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

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

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T / S	Patent	Date	Description	Patentee	Category	Assigned To
		1917
U	1,227,680	May 29, 1917	Method of Screw-Threading Articles Made of Horn Method of threading insulators made of animal horn (see 1,333,188)	SEGRE, Mario	Horn
		1920
U	1,333,188	March 9, 1920	Manufacture of Hollow Articles from Horn Manufacture of insulators from animal horn (see 1,227,680)	SEGRE, Mario	Horn

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