Patent information:
| Patent: | Utility 430,296 |
| Patented: | June 17, 1890 |
| Applied: | November 1, 1889 |
| Title: | Insulator |
| Description: | CD 257, CD 259, CD 262, CD 263, dove-tail ears on crown - helmet |
| Category: | Insulator |
| Assigned to: |
Patentee Information:
| OAKMAN, Samuel | Melrose, MA |
Class and subclass information:
| Class: | 174 | ELECTRICITY: CONDUCTORS AND INSULATORS |
| Subclass: | 174 | INSULATORS; With conductor holding means; Insulator structure; |
Known specimens:
| Number: | CD 257 |
| Number: | CD 259 |
| Number: | CD 262 |
| Number: | CD 263 |
Drawings:
Page 1 |