Patent information:
| Patent: | Utility 287,092 |
| Patented: | October 23, 1883 |
| Applied: | November 4, 1882 |
| Title: | Mechanism for Preventing Induced Currents in Telephone Lines |
| Description: | Pre-transposition technique to eliminate induced current on telephone and telegraph wires |
| Category: | Transposition |
| Assigned to: |
Patentee Information:
| BRENNAN, James W. | Chicago, IL |
| ROUSSEAU, Necter | Chicago, IL |
Class and subclass information:
| Class: | 174 | ELECTRICITY: CONDUCTORS AND INSULATORS |
| Subclass: | 32 | ANTI-INDUCTIVE STRUCTURES; |
| Class: | 174 | ELECTRICITY: CONDUCTORS AND INSULATORS |
| Subclass: | 45R | OVERHEAD; Towers, poles or posts; |
| Class: | 174 | ELECTRICITY: CONDUCTORS AND INSULATORS |
| Subclass: | 140R | INSULATORS; Combined; With conductive arcing or stress distributing means; |
| Class: | 174 | ELECTRICITY: CONDUCTORS AND INSULATORS |
| Subclass: | 176 | INSULATORS; With terminal elements; |
| Class: | 361 | ELECTRICITY: ELECTRICAL SYSTEMS AND DEVICES |
| Subclass: | 132 | SAFETY AND PROTECTION OF SYSTEMS AND DEVICES; High voltage dissipation (e.g., lightning arrester); Combined (e.g., with disconnect switch); With line supporting insulator; |
Known specimens:
| None known |
Drawings:
Page 1 |
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