| 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 = '428') AND (category.subclass = '446') ORDER BY date ASC, patent, type |
Total of 4 patents found where: Class is '428'; Subclass is '446';
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 |
| 1942 | ||||||
| U | 2,281,173 | April 28, 1942 | Insulator and Method of Producing Conducting Coating Thereon RFI prevention using an inexpensive glaze coating |
SANTOMIERI, Sebastian L. |
RFI | Victor Insulators, Inc. |
| 1943 | ||||||
| U | 2,327,972 | August 24, 1943 | High Strength Ceramic Surface Manufacturing method of using porcelain ""sand"" with a lower coefficient of expansion than the insulator body to rough up the surface and provide a strong cement joint without reducing the effectiveness of the compression glaze (see 2,337,691) |
STETTINIUS, Kenneth E. DEWEY, Benjamin F. |
Manufacturing | Lapp Insulator Co., Inc. |
| 1948 | ||||||
| U | 2,434,555 | January 13, 1948 | Electrical Insulator Method of soldering metal fittings on porcelain bushings made of ""Prestite"". |
FISCHER, Eugene H. HARNISH, John D. RUSSELL, JR., Ralston |
Manufacturing | Westhinghouse Electric Corp. |
| 1964 | ||||||
| U | 3,127,278 | March 31, 1964 | Low-Melting Glass Sealant and Article Made Therefrom Welding of glass block and TV Tube parts |
FRANCEL, Josef HAGEDORN, Erwin C. |
OI | Owens-Illinois Glass Co. |
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