Patent information:
| Patent: | Utility 971,322 |
| Patented: | September 27, 1910 |
| Applied: | November 29, 1909 |
| Title: | Mine Insulator |
| Description: | Mine hanger insulator (see GB191027804) |
| Category: | Mine |
| Assigned to: |
Patentee Information:
| SPEAKMAN, Charles W. | Monongahela, PA |
Class and subclass information:
| Class: | 174 | ELECTRICITY: CONDUCTORS AND INSULATORS |
| Subclass: | 164 | INSULATORS; With insulator-supporting or attaching means; Support penetrating; |
| Class: | 174 | ELECTRICITY: CONDUCTORS AND INSULATORS |
| Subclass: | 174 | INSULATORS; With conductor holding means; Insulator structure; |
| Class: | 174 | ELECTRICITY: CONDUCTORS AND INSULATORS |
| Subclass: | 201 | INSULATORS; With terminal elements; Pin type; Through pin; |
| Class: | 174 | ELECTRICITY: CONDUCTORS AND INSULATORS |
| Subclass: | 211 | INSULATORS; With moisture or dirt removing or shedding; |
Known specimens:
| None known |
Drawings:
Page 1 |