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 = '72') AND (category.subclass = '64') ORDER BY date ASC, patent, type |
Total of 1 patents found where: Class is '72'; Subclass is '64';
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T / S | Patent | Date | Description | Patentee | Category | Assigned To |
1859 | ||||||
U | 25,534 | September 20, 1859 | Machine for Making Lightning Rods Machine for making corrugated, twisted lightning rods out of sheet metal |
STEARNS, Charles |
Lightning Rod Machine |
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