Patent information:
| Patent: | Utility 2,138,571 |
| Patented: | November 29, 1938 |
| Applied: | November 20, 1936 |
| Title: | Insulator |
| Description: | Transposition for telephone line |
| Category: | Transposition |
| Assigned to: | Bell Telephone Laboratories, Inc. |
Patentee Information:
| DEHMEL, Richard C. | Brooklyn, NY |
Class and subclass information:
| Class: | 174 | ELECTRICITY: CONDUCTORS AND INSULATORS |
| Subclass: | 33 | ANTI-INDUCTIVE STRUCTURES; Conductor transposition; |
| Class: | 24 | BUCKLES, BUTTONS, CLASPS, ETC. |
| Subclass: | 129R | CORD AND ROPE HOLDERS; One-piece; |
| Class: | 174 | ELECTRICITY: CONDUCTORS AND INSULATORS |
| Subclass: | 146 | INSULATORS; Mid-line spacers; |
| Class: | 174 | ELECTRICITY: CONDUCTORS AND INSULATORS |
| Subclass: | 147 | INSULATORS; Mid-line spacers; Cross-over; |
| Class: | 174 | ELECTRICITY: CONDUCTORS AND INSULATORS |
| Subclass: | 175 | INSULATORS; With conductor holding means; Insulator structure; Self-retaining; |
Known specimens:
| None known |
Drawings:
Page 1 |
Page 2 |