| 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 = '256') AND (category.subclass = '11') ORDER BY date ASC, patent, type |
Total of 3 patents found where: Class is '256'; Subclass is '11';
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 |
| 1854 | ||||||
| U | 11,261 | July 11, 1854 | Improvement in Lightning Rods Lightning rod made of sheets of copper to form ribbed or vanes along its length and attached to buildings with lignum vitea wood insulators |
LYON, Amos |
Lightning Rod | |
| 1888 | ||||||
| U | 384,384 | June 12, 1888 | Metallic Crest Tile Lightning Rod Lightning rod in the form of metal crest tile and attached to end eaves of the house with conductors to ground |
NELSON, Clark B. |
Lightning Rod Crest | 1/2 to James H. Watson |
| 1939 | ||||||
U  |
2,163,954 | June 27, 1939 | Electric Fence Electric fence insulator with bail wire to hold the wire in place. |
LUCAS, John A. |
Electric Fence | Prime Manufacturing Co. |
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