| Number | Name | Date | Kind |
|---|---|---|---|
| 1431352 | Abbott | Oct 1922 | |
| 1951543 | Bruns et al. | Mar 1934 | |
| 3556293 | Schlueter | Jan 1971 | |
| 5103977 | Douglas | Apr 1992 |
| Number | Date | Country |
|---|---|---|
| 686523 | Mar 1965 | ITX |
| Entry |
|---|
| Peerless Chain Company Advertisement Publicly introduced at the National Hardware Show, Aug., 1991 at McCormick Place, Chicago, Ill. |