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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 = '404') ORDER BY date ASC, patent, type

Total of 3 patents found where: Class is '404';

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T / S Patent Date Description Patentee Category Assigned To
 1887
U 360,354 March 29, 1887 Insulator
Acoustic insulator to reduce vibration of telephone wires in acoustic or mechanical telephones		 LOCKE, Willie F.
 Acoustic 1/2 to John E. Robertson
 1939
U 2,182,971 December 12, 1939 Skylight or Floorlight Construction
Skylight construction using glass blocks		 RICHARDS, Joshua M.
 OU  
 1940
U 2,198,450 April 23, 1940 Light Transmitting Structure
Skylight construction using glass blocks		 CHERTKOF, Jack O.
 OU  

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