| 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 = '425') AND (category.subclass = '405.1') ORDER BY date ASC, patent, type |
Total of 3 patents found where: Class is '425'; Subclass is '405.1';
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 |
| 1929 | ||||||
| U | 1,717,996 | June 18, 1929 | Means for and Method of Making Insulators Press method of molding porcelain insulator with vibration improves quality (Hewlett) |
MOORE, JR., Stewart L. |
Press | Locke Insulator Corp. |
| 1942 | ||||||
| U | 2,301,939 | November 17, 1942 | Production of Ceramic Bodies Press to make a very dense porcelain body. It is neither wet process nor dry process porcelain. The product was called ""Prestite"" porcelain. |
FISCHER, Eugene H. |
Press | Westinghouse Electric & Mfg. Co. |
| 1959 | ||||||
| U | 2,915,801 | December 8, 1959 | Apparatus for Forming Plastic Clay Bodies Mold and pressing operation to eliminate the need to plunge and trim a suspension disk |
HARRY, William R. |
Mold | McGraw-Edison Co. |
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