| Number | Name | Date | Kind |
|---|---|---|---|
| D206993 | Baker | Feb 1967 | |
| D244513 | Butcher | May 1977 | |
| D297305 | Rudick et al. | Aug 1988 | |
| D303627 | Wilkinson | Sep 1989 | |
| D306554 | Lawson | Mar 1990 | |
| D313181 | Pettengill | Dec 1990 | |
| D315496 | Pettengill | Mar 1991 | |
| D320735 | Pettengill | Oct 1991 | |
| D363981 | Muderlak | Nov 1995 | |
| D373529 | Zogg et al. | Sep 1996 | |
| 3166221 | Nielsen | Jan 1965 | |
| 3236418 | Dalle et al. | Feb 1966 | |
| 3785528 | Mandeltort | Jan 1974 | |
| 4159066 | Silver | Jun 1979 | |
| 4220261 | White | Sep 1980 | |
| 4742940 | Wilkinson | May 1988 | |
| 4773562 | Gueret | Sep 1988 | |
| 4961520 | White | Oct 1990 | |
| 5102016 | Ball et al. | Apr 1992 | |
| 5289949 | Gentile | Mar 1994 |