|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 = '274') ORDER BY date ASC, patent, type|
Total of 4 patents found where: Class is '403'; Subclass is '274';
View a patent by clicking on the patent number. You can sort by any of the columns by clicking on the column name.
|T / S||Patent||Date||Description||Patentee||Category||Assigned To|
|U||186,877||January 30, 1877||Improvement in Lightning Rod Couplings
Coupling made with square socket that is crimped over end of lightning rod and has threaded bolt end to screw into next section
|REYBURN, William S.
MARTIN, Frederick J.
|Lightning Rod Coupling|
|U||882,979||March 24, 1908||Strain Insulator
Wood strain insulator with metal caps on each end and special eye to receive a hook
|TERRY, William C.
||Strain||The MacAllen Co.|
|U||906,787||December 15, 1908||Insulator Pin
Pin, metal with wood cob and flange to nail to crossarm
|ETTE, Charles G.
||Pin||Ette Investment Co.|
|U||1,558,268||October 20, 1925||Coupling for Sectional Rods
Lightning rod coupling the fits over spiralled rods and crimps tight against the end and screws to other couplings (see 1,140,052)
|MAST, Louis L.
||Lightning Rod Coupling|
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