| 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 |
| 1877 | ||||||
| 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 | |
| 1908 | ||||||
| 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. |
| 1925 | ||||||
| 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 | |
Total of 0.00 seconds