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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 = '279') ORDER BY category ASC, date, patent, type

Total of 8 patents found where: Class is '279';

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T / S Patent Date Description Patentee Category Assigned To
 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
JOHNSON, Isaac
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
JOHNSON, Isaac
Lightning Rod Coupling Reyburn, Hunter & Co.
U 176,769 May 2, 1876 Improvement in Lightning Rod Couplings
Lightning rod connector made of solid metal fitting snugly inside each end of the tubular rod and secured with pins
BRADLEY, Sylvester
Lightning Rod Coupling  
U 305,140 September 16, 1884 Lightning Rod Coupling
Coupling for tubular lightning rods
BRADLEY, Sylvester
Lightning Rod Coupling  
U 406,681 July 9, 1889 Lightning Rod
Coupling with flat resilent spring between the sections
WATTS, John Henry Charles
Lightning Rod Coupling  
U 1,625,266 April 19, 1927 Rod Coupling
Lightning rod made solid with parallel fins and connected by coupling with matching male and female threads crimped over the ends of the rod sections
MAST, Charles O.
Lightning Rod Coupling Mast Lightning Rod Co.
 Plunger
U 735,429 August 4, 1903 Insulator Machine
Plunger for press
WATERS, James
Plunger  
 Press; OI
U 2,257,675 September 30, 1941 Plunger Screw-Out Chuck
Insulator threading mandrel removal machine
EASTUS, Harold L.
Press; OI Owens-Illinois Glass Co.

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