Patent information:
| Patent: | Utility 971,683 |
| Patented: | October 4, 1910 |
| Applied: | August 13, 1909 |
| Title: | Insulator |
| Description: | Knob |
| Category: | Knob |
| Assigned to: |
Patentee Information:
| MARKEL, Harley R. | Columbus, OH |
Class and subclass information:
| Class: | 174 | ELECTRICITY: CONDUCTORS AND INSULATORS |
| Subclass: | 157 | INSULATORS; Divided insulator; Aligned through aperture; |
Known specimens:
| Number: |  |
Drawings:
Page 1 |