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 = '501') AND (category.subclass = '26') ORDER BY category DESC, date, patent, type |
Total of 2 patents found where: Class is '501'; Subclass is '26';
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T / S | Patent | Date | Description | Patentee | Category | Assigned To |
RFI | ||||||
U | 3,368,026 | February 6, 1968 | Electrical Insulator Having Improved Surface Electrical Stress Distribution RFI prevention using two glaze coatings on suspension insulators |
VINCE, Patrick Michael |
RFI | Doulton & Co., Ltd. |
Glaze | ||||||
U | 2,157,100 | May 9, 1939 | Glazed Ceramic Insulator and the Like Glaze - compression glaze |
ROWLAND, Davidge H. |
Glaze | Locke Insulator Corp. |
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