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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 = '403') AND (category.subclass = '329') ORDER BY date ASC, patent, type

Total of 2 patents found where: Class is '403'; Subclass is '329';

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T / S Patent Date Description Patentee Category Assigned To
U 266,075 October 17, 1882 Lightning Rod Joint or Coupling
Internal coupling for hollow lightning rods that can be pinned to the rod
BALL, Charles E.
Lightning Rod Coupling  
U 937,140 October 19, 1909 Non-detachable Insulator
Pin permanently fixed to the insulator via slotted pinhole
MACCALLUM, Alexander P.

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