Search the Insulator Patent Reference Library

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

Total of 3 patents found where: Category is 'Spiral';

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T / S	Patent	Date	Description	Patentee	Category	Assigned To
		1913
U	1,065,737	June 24, 1913	Insulator and Support Spiral conical insulator for tightening of line wire	SLONECKER, Abiram J.	Spiral
		1932
U	1,869,397	August 2, 1932	Insulator Insulator with spiral or helical grooves to all rain to wash the surface better	STROUP, Charles L.	Spiral
		1957
U	2,776,332	January 1, 1957	Self-Cleaning Outdoor High Tension Insulators Spiral or helical side petticoats that are washed by rain	VON CRON, Hans	Spiral	Siemens-Schuckertwerke Aktiengesellschaft

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