Patent information:
| Patent: | Utility 187,183 |
| Patented: | February 6, 1877 |
| Applied: | November 18, 1876 |
| Title: | Improvement in Telegraph Insulators |
| Description: | CD 130.2, wire groove composed of a series of projections |
| Category: | Insulator |
| Assigned to: | 1/2 to Joseph Herz |
Patentee Information:
| SEILER, Paul | San Francisco, CA |
Class and subclass information:
| Class: | 174 | ELECTRICITY: CONDUCTORS AND INSULATORS |
| Subclass: | 173 | INSULATORS; With conductor holding means; Insulator embracing; Tie wires; |
| Class: | 174 | ELECTRICITY: CONDUCTORS AND INSULATORS |
| Subclass: | 174 | INSULATORS; With conductor holding means; Insulator structure; |
Known specimens:
| Number: | CD 130.2 |
Drawings:
Page 1 |