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 = '264') AND (category.subclass = '296') ORDER BY date ASC, patent, type |
Total of 3 patents found where: Class is '264'; Subclass is '296';
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T / S | Patent | Date | Description | Patentee | Category | Assigned To |
1875 | ||||||
U | 167,608 | September 14, 1875 | Improvement in the Manufacture of Glassware Lamp foot made by pushing up bottom |
GILL, James C. |
Lamp | John Adams & Co. |
1930 | ||||||
U | 1,779,811 | October 28, 1930 | Method of Manufacturing Insulators Press for making skirts/petticoats in one-piece porcelain (replaces casting) |
HARVEY, William F. |
Press | |
1946 | ||||||
U | 2,395,295 | February 19, 1946 | Method of Producing Insulators Improved method of jiggering and plunging |
ROWLAND, Davidge H. |
Manufacturing |
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