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 = '432') AND (category.subclass = '74') ORDER BY patent ASC, type |
Total of 1 patents found where: Class is '432'; Subclass is '74';
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 | 11,893 | November 7, 1854 | Glass Furnace Improved circular glass furnace using anthracite coal |
HAY, Andrew K. |
Furnace |
Total of 0.00 seconds