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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 = '274') ORDER BY date ASC, patent, type

Total of 2 patents found where: Class is '264'; Subclass is '274';

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T / S Patent Date Description Patentee Category Assigned To
 1909
U 941,032 November 23, 1909 Process of Manufacturing Insulators
Press to mold and produce composition strain insulator
MCCARTHY, Louis
Press The Macallen Co.
 1923
U 1,446,067 February 20, 1923 Method of Connecting Insulator Units
Suspension, method of cementing pin
REAGAN, Frank H.
Suspension Locke Insulator Corp.

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