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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 = '30') ORDER BY date ASC, patent, type

Total of 4 patents found where: Class is '30';

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T / S Patent Date Description Patentee Category Assigned To
 1876
U 183,865 October 31, 1876 Improvement in Telegraph Insulators
Slotted glass pin to hold wire and cap screwed to secure wire		 REYNOLDS, David M.
 Slotted James M. Brookfield
 1890
U 433,284 July 29, 1890 Non-Conductive and Ornamental Handle for Vessels, $c.
Composition handle for tea pots, knives, door knobs, and electrical switches		 GOULD, William P.
 Composition  
 1907
U Specimen known 870,951 November 12, 1907 Tool
Cutting tool to shorten porcelain tubes		 GOODHOLM, George H.
TRAIN, Jacob A.
 Tool  
 1944
U 2,341,309 February 8, 1944 Cutting Tool
Cutting tool to remove clay from inside a bushing		 BETTINI, David Joseph
 Cutting Tool Locke Insulator Corp.

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