Patent information:
| Patent: | Utility 430,296 |
| Patented: | June 17, 1890 |
| Applied: | November 1, 1889 |
| Title: | Insulator |
| Description: | CD 257, CD 259, CD 263, dove-tail ears on crown - helmet. Patent is also found on New Lexington porcelain insulators M-3890 and M-4325A. |
| 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 263 |
| Number: | M 3890 |
| Number: | M 4325A |
Drawings:
Page 1 |