| Number | Name | Date | Kind |
|---|---|---|---|
| 3788582 | Swanquist | Jan 1974 | |
| 4323727 | Berg | Apr 1982 | |
| 4358079 | Navano | Nov 1982 | |
| 4481697 | Bachle | Nov 1984 | |
| 4486065 | Wittes | Dec 1984 |
| Entry |
|---|
| Thomas & Betts Electrical Construction and Maintenance Products, Electrical Division, 1988, pp. 170-172, 189-195, 203-204, 215-217, 233. |