|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 = '174') AND (category.subclass = '7') ORDER BY date ASC, patent, type|
Total of 12 patents found where: Class is '174'; Subclass is '7';
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||97,496||December 7, 1869||Improvement in Lightning Rods and Conductors
Grounding tip for lightning rod that retains water to improve conduction to ground
||Lightning Rod Ground|
|U||174,451||March 7, 1876||Improvement in Lightning Rods
Lightning rod ground point made of sheet copper arranged concave or fluted
|WESTON, James H.
|U||175,933||April 11, 1876||Improvement in Lightning Rods
Lightning rod made of sheet iron folded over wires with sections joined with slip joints
|COLE, Robert S.
|U||183,370||October 17, 1876||Improvement in Lightning Rods
Lighning rod connecting sleeve to ground point to allow rainwater to wet the ground around the point and flanges to dissipate the charge
|COLE, Robert S.
|U||317,908||May 12, 1885||Electric Conductor for Wire Fence
Lightning protection for wire fence
||Lightning Rod Fence|
|U||452,983||May 26, 1891||Grounding Device for Lightning Rods
Grounding device for lightning rods
|RADFORD, Cassius M.
|U||538,603||April 30, 1895||Lightning Rod
Hollow lightning rod with cup to divert water into the lower sections of the rod to improve conduction of current to ground
|U||796,760||August 8, 1905||Lightning Conductor
Lightning rod point with multple projections that are plated with platinum and connected to cone-shaped ground rod made of perforated copper sheet and filled with powdered charcoal and buried in a damp layer of soil
|PRICE, Frank E.
MCCULLOUGH, William H.
|Lightning Rod Point|
|U||940,742||November 23, 1909||Water Retaining and Conveying Attachment for Cable Lightning Rods
Method of retaining water in the ground to aid in conducting the current to ground
|U||951,411||March 8, 1910||Lightning Protector for Buildings
Lightning rod system using a hollow metal crest with multiple points and connected to gutters
|ANDERSON, John P. A.
||Lightning Rod Crest|
|U||984,175||February 14, 1911||Lightning Rod
Means of directing rain water down into the ground tip and retain the water in the ground to aid in conduction of the current to ground
|YARIAN, Charles E.
|U||1,150,907||August 24, 1915||Lightning Rod Terminal
Lightning rod ground terminal to keep the earth wet to improve conduction to ground
|THOMPSON, George E.
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