Patent information:
| Patent: | Utility 234,523 |
| Patented: | November 16, 1880 |
| Applied: | August 6, 1880 |
| Title: | Telegraph Insulator |
| Description: | Slotted circular insulator held by split metal screw bracket |
| Category: | Slotted |
| Assigned to: | |
Patentee Information:
Class and subclass information:
| Class: | 174 | ELECTRICITY: CONDUCTORS AND INSULATORS |
| Subclass: | 154 | INSULATORS; Insulator and conductor embracing holder; |
| Class: | 174 | ELECTRICITY: CONDUCTORS AND INSULATORS |
| Subclass: | 164 | INSULATORS; With insulator-supporting or attaching means; Support penetrating; |
| Class: | 411 | EXPANDED, THREADED, DRIVEN, HEADED, TOOL-DEFORMED, OR LOCKED-THREADED FASTENER |
| Subclass: | 427 | INTERNALLY THREADED FASTENER ELEMENT, E.G., NUT, ETC.; |
Known specimens:
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Drawings:
Page 1 |
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