Patent information:
| Patent: | Utility 840,336 |
| Patented: | December 25, 1906 |
| Applied: | February 7, 1906 |
| Title: | Insulator |
| Description: | Knob |
| Category: | Knob |
| Assigned to: |
Patentee Information:
| JOHNSON, Alfred | Quincy, IL |
Class and subclass information:
| Class: | 174 | ELECTRICITY: CONDUCTORS AND INSULATORS |
| Subclass: | 156 | INSULATORS; Divided insulator; |
| Class: | 174 | ELECTRICITY: CONDUCTORS AND INSULATORS |
| Subclass: | 166R | INSULATORS; With insulator-supporting or attaching means; Support penetrating; Through aperture, penetrating element clamped; |
Known specimens:
| None known |
Drawings:
Page 1 |