| Number | Name | Date | Kind |
|---|---|---|---|
| 363331 | Hammer | May 1887 | |
| 2091538 | Wasseth | Aug 1937 | |
| 4103378 | Granados | Aug 1978 | |
| 4221113 | Jordan | Sep 1980 | |
| 4477936 | Weston | Oct 1984 | |
| 4967435 | Seals | Nov 1990 | |
| 5251341 | Seals | Oct 1993 |
| Entry |
|---|
| "CPR Tool"-appeared in an article in a flyer through the mail, dated Jun. 1993. |