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 = '111') ORDER BY date ASC, patent, type |
Total of 1 patents found where: Class is '174'; Subclass is '111';
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T / S | Patent | Date | Description | Patentee | Category | Assigned To |
1882 | ||||||
U | 252,857 | January 24, 1882 | Insulator for Telegraph Wires Insulators strung on wires to separate groups of wires in a tube |
GORE, Charles L. |
Insulator | 1/4 to John Townsend |
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