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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 = '264') AND (category.subclass = '102') ORDER BY date ASC, patent, type

Total of 2 patents found where: Class is '264'; Subclass is '102';

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T / S Patent Date Description Patentee Category Assigned To
 1922
U Specimen known 1,424,924 August 8, 1922 Method of Producing Clay Bodies
Vacuum process for removing air from the clay. Patent was owned by Lapp Insulator Co.		 LAPP, Grover W.
 Vacuum  
 1933
U 1,925,211 September 5, 1933 Art of Assembling Insulators
Method of cementing pin in suspension insulator to remove air		 SMITH, William A.
 Suspension The Ohio Brass Co.

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