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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 = '324') AND (category.subclass = '127') ORDER BY date ASC, patent, type

Total of 1 patents found where: Class is '324'; Subclass is '127';

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T / S Patent Date Description Patentee Category Assigned To
 1966
U Specimen known 3,251,014 May 10, 1966 Electrical Coupling Device
Miscellaneous internal coupling device to obtain a voltage from high voltage power line		 STEIN, Laurence B.
 Miscellaneous Sigma Instruments, Inc.

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