SELECT DISTINCT patent.*, YEAR(date) as year FROM patent LEFT JOIN name ON name.patent = patent.patent AND name.type = patent.type LEFT JOIN category ON category.patent = patent.patent AND category.type = patent.type WHERE (category.class = '501') AND (category.subclass = '129') ORDER BY last_name DESC, first_name, date, patent, type |
Total of 1 patents found where: Class is '501'; Subclass is '129';
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T / S | Patent | Date | Description | Patentee | Category | Assigned To |
FENTON, Christopher W. | ||||||
U | 393 | September 22, 1837 | Improvement in the Composition of Matter for Fire-Bricks Flint composition material for the Elliott flint insulators |
FENTON, Christopher W. |
Flint |
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