| 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 = '427') AND (category.subclass = '314') ORDER BY date ASC, patent, type |
Total of 2 patents found where: Class is '427'; Subclass is '314';
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| T / S | Patent | Date | Description | Patentee | Category | Assigned To |
| 1942 | ||||||
| U | 2,274,955 | March 3, 1942 | High Tension Electric Insulator and Method of Coating Same RFI: antimony coated top |
DYKSTRA, Laurence J. MEYER, Edwin M. |
RFI | Victor Insulators, Inc. |
| 1963 | ||||||
| U | 3,093,508 | June 11, 1963 | Method of Coating Glass Silicone coated glass that can be used for insulators |
WARTENBERG, Erwin W. |
Glass Coating | |
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