Patent information:
| Patent: | Utility 135,334 |
| Patented: | January 28, 1873 |
| Applied: | |
| Title: | Improvement in Telegraph Insulators |
| Description: | Blocks (2) (glass) inside a metal box with suspended bolt to hold wire |
| Category: | Block |
| Assigned to: | |
Patentee Information:
Class and subclass information:
| Class: | 174 | ELECTRICITY: CONDUCTORS AND INSULATORS |
| Subclass: | 180 | INSULATORS; With terminal elements; Plural; Multi-part, sectional or composite insulator; Pin and opposed overlapping terminal; |
Known specimens:
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Drawings:
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