Patent information:
| Patent: | Utility 1,527,318 |
| Patented: | February 24, 1925 |
| Applied: | August 10, 1921 |
| Title: | Insulator |
| Description: | Knob with multiple side grooves |
| Category: | Knob |
| Assigned to: | American Telephone & Telegraph Co. |
Patentee Information:
| LEWIS, Edwin | New York, NY |
Class and subclass information:
| Class: | 174 | ELECTRICITY: CONDUCTORS AND INSULATORS |
| Subclass: | 174 | INSULATORS; With conductor holding means; Insulator structure; |
| Class: | 174 | ELECTRICITY: CONDUCTORS AND INSULATORS |
| Subclass: | 166R | INSULATORS; With insulator-supporting or attaching means; Support penetrating; Through aperture, penetrating element clamped; |
Known specimens:
| Number: |  |
Drawings:
Page 1 |