Patent information:
| Patent: | Utility 469,940 |
| Patented: | March 1, 1892 |
| Applied: | September 30, 1891 |
| Title: | Insulator |
| Description: | Knob - self-tying |
| Category: | Knob |
| Assigned to: |
Patentee Information:
| HAMMOND, Charles N. | Boston, MA |
Class and subclass information:
| Class: | 174 | ELECTRICITY: CONDUCTORS AND INSULATORS |
| Subclass: | 175 | INSULATORS; With conductor holding means; Insulator structure; Self-retaining; |
| Class: | 248 | SUPPORTS |
| Subclass: | 49 | PIPE OR CABLE; |
Known specimens:
| Number: |  |
Drawings:
Page 1 |