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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 = '4') ORDER BY date ASC, patent, type

Total of 2 patents found where: Class is '4';

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T / S Patent Date Description Patentee Category Assigned To
U 454,655 June 23, 1891 Suspension Device for Pails
Device to swing a tobacco pail under a store counter
LOCKE, Fred M.
COBB, Frank E.
U 589,256 August 31, 1897 Process of Making Insulating Material
Composition insulator made of paper pulp saturated with sulfur
GRAY, John
CASE, Charles H.

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