Patent information:
| Patent: | Utility 75,815 |
| Patented: | March 24, 1868 |
| Applied: | |
| Title: | Improvement in Insulators for Telegraphs |
| Description: | Earthenware insulator, cemented galvanized pin coated with paraffin (Brown p. 57) |
| Category: | Earthenware |
| Assigned to: |
Patentee Information:
| VARLEY, Cromwell F. | New York, NY |
Class and subclass information:
| Class: | 174 | ELECTRICITY: CONDUCTORS AND INSULATORS |
| Subclass: | 110R | CONDUITS, CABLES OR CONDUCTORS; Insulated; |
| Class: | 174 | ELECTRICITY: CONDUCTORS AND INSULATORS |
| Subclass: | 168 | INSULATORS; With conductor holding means; |
| Class: | 174 | ELECTRICITY: CONDUCTORS AND INSULATORS |
| Subclass: | 196 | INSULATORS; With terminal elements; Pin type; Plastic material adhered; |
| Class: | 264 | PLASTIC AND NONMETALLIC ARTICLE SHAPING OR TREATING: PROCESSES |
| Subclass: | 265 | MECHANICAL SHAPING OR MOLDING TO FORM OR REFORM SHAPED ARTICLE; To produce composite, plural part or multilayered article; Shaping material and uniting to a preform; Conditioning or treatment of preform; |
Known specimens:
| Number: |  |