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 = '602') ORDER BY date ASC, patent, type |
Total of 3 patents found where: Class is '264'; Subclass is '602';
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T / S | Patent | Date | Description | Patentee | Category | Assigned To |
1904 | ||||||
U | 774,765 | November 15, 1904 | Art and Method of Manufacturing Earthenware Insulators Earthenware, manufacture of |
LOCKE, Fred M. |
Earthenware | |
1905 | ||||||
U | 790,214 | May 16, 1905 | Method of Manufacturing High Potential Earthenware Insulators Earthenware, manufacture of hi-potential insulators |
LOCKE, Fred M. |
Earthenware | |
1944 | ||||||
U | 2,346,620 | April 11, 1944 | Method of Forming Insulator Bodies Method to mix water with dry ingredients to form clay of the proper water content |
SKIPPER, Edward M. |
Clay | Locke Insulator Corp. |
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