Patent information:
| Patent: | Utility 2,437,559 |
| Patented: | March 9, 1948 |
| Applied: | December 5, 1945 |
| Title: | Insulator and Method of Manufacturing Same |
| Description: | Addition of powdered aluminum to improve quality of porcelain |
| Category: | Manufacturing |
| Assigned to: | The Porcelain Insulator Corp. |
Patentee Information:
Class and subclass information:
| Class: | 501 | COMPOSITIONS: CERAMIC |
| Subclass: | 144 | CERAMIC COMPOSITIONS; Clay containing (e.g., porcelain, earthenware, etc.); And flint or feldspar; Kaolin (e.g., ball clay, fire clay, etc.) containing; |
| Class: | 174 | ELECTRICITY: CONDUCTORS AND INSULATORS |
| Subclass: | 137B | INSULATORS; Compositions; |
Known specimens:
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