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 = 'D10') AND (category.subclass = '121') ORDER BY type DESC, date, patent |
Total of 1 patents found where: Class is 'D10'; Subclass is '121';
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 |
1920 | ||||||
D | 56,715 | November 30, 1920 | Design for a Ball for Lightning Rods and Barn Ventilators Glass ball with spiralling and intersecting grooves on the surface |
THOMPSON, George E. |
Lightning Rod Ornament |
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