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 = '404') AND (category.subclass = '22') ORDER BY category DESC, date, patent, type |
Total of 1 patents found where: Class is '404'; Subclass is '22';
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 |
OU | ||||||
U | 2,198,450 | April 23, 1940 | Light Transmitting Structure Skylight construction using glass blocks |
CHERTKOF, Jack O. |
OU |
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