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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 = '254') AND (category.subclass = '134.3R') ORDER BY date ASC, patent, type

Total of 1 patents found where: Class is '254'; Subclass is '134.3R';

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T / S Patent Date Description Patentee Category Assigned To
 1925
U Specimen known 1,563,377 December 1, 1925 Pulling and Transposing Mechanism for Line Wires
Mechanism for pulling multiple wires in order to string them for transposing.		 KLEIN, Charles H.
 Equipment American Telephone & Telegraph Co.

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