Patent information:
| Patent: | Utility 165,535 |
| Patented: | July 13, 1875 |
| Applied: | June 2, 1875 |
| Title: | Improvement in Underground Telegraph Lines |
| Description: | Underground cable insulated by wrapping with cotton, hemp, or jute and saturating it with paraffin. |
| Category: | Cable |
| Assigned to: |
Patentee Information:
| BROOKS, David | Philadelphia, PA |
Class and subclass information:
| Class: | 174 | ELECTRICITY: CONDUCTORS AND INSULATORS |
| Subclass: | 25R | WITH FLUIDS OR VACUUM; Conduits, cables and conductors; Impregnated insulation type; |
| Class: | 174 | ELECTRICITY: CONDUCTORS AND INSULATORS |
| Subclass: | 15.6 | WITH FLUIDS OR VACUUM; With cooling or fluid feeding, circulating or distributing; For cable, conductor or joint; |
| Class: | 174 | ELECTRICITY: CONDUCTORS AND INSULATORS |
| Subclass: | 38 | UNDERGROUND; Distributing and/or combined with overhead; |
| Class: | 174 | ELECTRICITY: CONDUCTORS AND INSULATORS |
| Subclass: | 87 | CONDUITS, CABLES OR CONDUCTORS; Combined; With joints; Angular; |
Known specimens:
| None known |
Drawings:
Page 1 |