Patent information:
| Patent: | Utility 1,329,770 |
| Patented: | February 3, 1920 |
| Applied: | January 11, 1916 |
| Title: | Insulator |
| Description: | Suspension type for J-D |
| Category: | Suspension |
| Assigned to: | Jeffery-Dewitt Co. |
Patentee Information:
| JOHNSTON, Robert M. | Detroit, MI |
Class and subclass information:
| Class: | 174 | ELECTRICITY: CONDUCTORS AND INSULATORS |
| Subclass: | 150 | INSULATORS; Multiple insulator assemblies; Strings and stacks; |
| Class: | 174 | ELECTRICITY: CONDUCTORS AND INSULATORS |
| Subclass: | 186 | INSULATORS; With terminal elements; Plural; Caps; |
| Class: | 174 | ELECTRICITY: CONDUCTORS AND INSULATORS |
| Subclass: | 189 | INSULATORS; With terminal elements; Cap type; Plastic material adhered; |
Known specimens:
| Number: |  |
Drawings:
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