Patent information:
| Patent: | Design 108,489 |
| Patented: | February 15, 1938 |
| Applied: | November 29, 1937 |
| Title: | Design for an Electric Insulator |
| Description: | Standard Porcelain No. 57 |
| Category: | Knob |
| Assigned to: | Porcelain Products, Inc. |
Patentee Information:
| DALTON, Rolland E. | Fostoria, OH |
Class and subclass information:
| Class: | D13 | EQUIPMENT FOR PRODUCTION, DISTRIBUTION, OR TRANSFORMATION OF ENERGY |
| Subclass: | 131 | |
| Class: | 174 | ELECTRICITY: CONDUCTORS AND INSULATORS |
| Subclass: | 158F | INSULATORS; With insulator-supporting or attaching means; Fence post insulators; |
| Class: | 174 | ELECTRICITY: CONDUCTORS AND INSULATORS |
| Subclass: | 175 | INSULATORS; With conductor holding means; Insulator structure; Self-retaining; |
Known specimens:
| Number: |  |
Drawings:
Page 1 |