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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 = '285') AND (category.subclass = '397') ORDER BY type ASC, date, patent

Total of 8 patents found where: Class is '285'; Subclass is '397';

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T / S Patent Date Description Patentee Category Assigned To
U 113,530 April 11, 1871 Improvement in Lightning Rods
Lightning rods connected with a tubular metal dowel
KING, Lewis
Lightning Rod Coupling  
U 113,869 April 18, 1871 Improvement in Lightning Rods
Coupling for tubular lightning rods made of a lap or scarf joint
GAYLORD, Albert A.
Lightning Rod Coupling  
U 118,166 August 15, 1871 Improvement in Lightning Rods
Coupling for tubular or solid lightning rods that is screwed together and made solid by a ferrule secured with a pin
SUTLIFF, Oliver L.
Lightning Rod Coupling  
U 170,377 November 23, 1875 Improvement in Lightning Rods
Coupling for hollow lightning rods composed of a hollow indented plug that fits into indentions in the rod ends
Lightning Rod Coupling  
U 173,962 February 22, 1876 Improvement in Couplings for Tubing and Lightning Rods
Coupling made of a short hollow piece placed inside both ends of the rod and crimped down through the rod ends to secure the sections
Lightning Rod Coupling Reyburn, Hunter & Co.
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 470,514 March 8, 1892 Lightning Conductor
Hollow conductor rod with slip fittings
Lightning Rod  
U 938,137 October 26, 1909 Lightning Rod
Lightning rod coupling not made of copper but maintaining a copper contact
GOETZ, Julius F.
Lightning Rod Coupling  

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