| 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 = '126.2') ORDER BY date ASC, patent, type |
Total of 4 patents found where: Class is '427'; Subclass is '126.2';
View a patent by clicking on the patent number. You can sort by any of the columns by clicking on the column name.
| T / S | Patent | Date | Description | Patentee | Category | Assigned To |
| 1939 | ||||||
| U | 2,154,387 | April 11, 1939 | Electric Insulator RFI: coat crown with metallic glaze to prevent radio interference (advertised in Electrical World 8-12-1939) |
SLEEMAN, Harold P. |
RFI | The R. Thomas & Sons Co. |
| 1941 | ||||||
| U | 2,264,152 | November 25, 1941 | Method of Forming a Metallic Surface on Ceramic Bodies RFI metallic coating that strongly adheres to the insulator |
ROWLAND, Davidge H. |
RFI | Locke Insulator Corp. |
| 1960 | ||||||
| U | 2,953,483 | September 20, 1960 | Method and Apparatus for Applying Coatings to Selected Areas of Articles Radio treatment process for CD 239 |
TOROK, Julius J. |
RFI | Owens-Illinois Glass Co. |
| 1972 | ||||||
| U | 3,658,583 | April 25, 1972 | Method for Producing Semi-Conducting Glaze Compositions for Electric Insulators RFI semi-conductive glaze formulas |
OGAWA, Yutaka |
RFI | NGK Insulators, Ltd. |
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