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 = '411') AND (category.subclass = '517') ORDER BY date ASC, patent, type

Total of 3 patents found where: Class is '411'; Subclass is '517';

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
		1904
U	773,733	November 1, 1904	Insulator Wall tube with ribs and metal clip	GREENE, Leon W.	Wall Tube
		1913
U	1,080,257	December 2, 1913	Insulator Wall tube with metal clip	BRUCHSALER, Karl	Wall Tube
		1929
U	1,738,188	December 3, 1929	Insulating Support Suspension cap, pin and connector	LANYON, Samuel Herbert	Suspension	Lapp Insulator Co.

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