Patent information:
| Patent: | Utility 517,591 |
| Patented: | April 3, 1894 |
| Applied: | January 6, 1894 |
| Title: | Insulating Tube |
| Description: | Wall tube with longitudinal fin ribs |
| Category: | Wall Tube |
| Assigned to: |
Patentee Information:
| ROBINSON, Miner | Newton, MA |
Class and subclass information:
| Class: | 174 | ELECTRICITY: CONDUCTORS AND INSULATORS |
| Subclass: | 152G | INSULATORS; Through wall or plate; Bushing type; Grommets or tubes; |
Known specimens:
| None known |
Drawings:
Page 1 |