| 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 = 'DIG3') ORDER BY date ASC, patent, type |
Total of 4 patents found where: Class is '256'; Subclass is 'DIG3';
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 |
| 1889 | ||||||
| U | 396,847 | January 29, 1889 | Wire Hook Insulated hook with four prongs to wrap line wire around |
ASHEN, Peter |
Hook | Sylvester Y. L'Hommedieu & Co. |
| 1890 | ||||||
| U | 434,144 | August 12, 1890 | Electric Insulator Tie wire clip |
DUNBAR, John K. |
Tie Wire | |
| 1893 | ||||||
| U | 496,081 | April 25, 1893 | Insulator Insulator mounted in a slot in the crossarm and secured with a hinged latching cover |
WRIGHT, Joseph F. |
Insulator | |
| 1908 | ||||||
| U | 887,520 | May 12, 1908 | Insulator Knob - self-tying |
REHLING, John W. |
Knob | |
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