Patent information:
| Patent: | Utility 138,512 |
| Patented: | May 6, 1873 |
| Applied: | October 19, 1872 |
| Title: | Improvement in Insulators for Telegraph lines |
| Description: | Self-tying insulator with cap |
| Category: | Self-tying Miscellaneous |
| Assigned to: | |
Patentee Information:
Class and subclass information:
| Class: | 174 | ELECTRICITY: CONDUCTORS AND INSULATORS |
| Subclass: | 156 | INSULATORS; Divided insulator; |
Known specimens:
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Drawings:
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