Patent information:
Patent: | Utility 66,453 |
Patented: | July 9, 1867 |
Applied: | |
Title: | Improvement in Insulators for Telegraphs |
Description: | Earthenware pin and insulator saturated with tar |
Category: | Earthenware |
Assigned to: | |
Patentee Information:
Class and subclass information:
Class: | 174 | ELECTRICITY: CONDUCTORS AND INSULATORS |
Subclass: | 165 | INSULATORS; With insulator-supporting or attaching means; Support penetrating; Penetrating element socketed in insulator; |
Class: | 174 | ELECTRICITY: CONDUCTORS AND INSULATORS |
Subclass: | 174 | INSULATORS; With conductor holding means; Insulator structure; |
Known specimens:
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Drawings:
Page 1 |
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