Search the Insulator Patent Reference Library

Search the Insulator Patent Reference Library:

SELECT DISTINCT patent.*, YEAR(date) as year FROM patent LEFT JOIN category ON category.patent = patent.patent AND category.type = patent.type WHERE (category.class = '65') AND (category.subclass = '171') ORDER BY date ASC, patent, type

Total of 4 patents found where: Class is '65'; Subclass is '171';

View a patent by clicking on the patent number. You can sort by any of the columns by clicking on the column name.

T / S	Patent	Date	Description	Patentee	Category	Assigned To
		1898
U	596,651	January 4, 1898	Press for Making Insulators Press for making insulators	BROOKFIELD, Henry M.	Press	William Brookfield
		1936
U	2,034,925	March 24, 1936	Hollow Building Block Method in manufacturing glass to glass seal welded blocks	SLAYTER, Games IRVINE, Jan S. THOMAS, JR., John H.	OI	Owens-Illinois Glass Co.
U	2,052,343	August 25, 1936	Plastic Forming Apparatus Insulator press	DU BOIS, David Irvin	Press	Whitall Tatum Co.
		1940
U	2,215,984	September 24, 1940	Apparatus for Producing Hollow Glass Articles Glass suction press for CD 128	SOUBIER, Leonard D.	Press	Owens-Illinois Glass Co.

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