Search the Insulator Patent Reference Library

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

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

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T / S	Patent	Date	Description	Patentee	Category	Assigned To
		1908
U	897,636	September 1, 1908	Process for Making Feldspar Flux Feldspar flux, method of preparing	LOCKE, Fred M.	Feldspar
U	907,155	December 22, 1908	Manufacture of Spar Insulators Feldspar insulator material (see reissue 12,992 on 7-13-1909)	LOCKE, Fred M.	Feldspar
		1909
R	12,992	July 13, 1909	Manufacture of Spar Insulators Feldspar insulator material (reissue of 907,155)	LOCKE, Fred M.	Feldspar

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