| Number | Name | Date | Kind |
|---|---|---|---|
| 1222048 | Sunderland | Apr 1917 | |
| 2040642 | Browne | May 1936 | |
| 2152096 | Russell | Mar 1939 | |
| 2354280 | Russell | Jul 1944 | |
| 2569912 | Andersen | Oct 1951 | |
| 2793903 | Mallard | May 1957 | |
| 3083991 | Gale | Apr 1963 | |
| 4164378 | Linehan | Aug 1979 | |
| 4441748 | St. Germain | Apr 1984 | |
| 5018775 | McKenna et al. | May 1991 |
| Number | Date | Country |
|---|---|---|
| 2431-074 | Mar 1980 | FRX |
| 1808807 A1 | Apr 1993 | SUX |
| 509683 | Jul 1939 | GBX |
| Entry |
|---|
| The American Group sales brochure, p. 38, Nylite Spool, Shield, Shackle & Snatch Block, at least as early as Oct., 1997. |