| Number | Name | Date | Kind |
|---|---|---|---|
| D323776 | Hansen | Feb 1992 | |
| D370620 | Ziemer | Jun 1996 | |
| 4706478 | Swan et al. | Nov 1987 | |
| 5984383 | Parikh et al. | Nov 1999 |
| Entry |
|---|
| Adjustable Recessed T Locks, Piedmont, Apr. 25, 1984, p. 7. |
| Southco Latches and Access Hardware, NA, Southco, Inc. Concordville, PA (1998) pp. E1-E24. |