| Number | Name | Date | Kind |
|---|---|---|---|
| D261390 | Harvill | Oct 1981 | |
| D281568 | Bruffey, Jr. et al. | Dec 1985 | |
| D284159 | Crosby et al. | Jun 1986 | |
| D284926 | Sedam et al. | Aug 1986 | |
| D302369 | Schechter et al. | Jul 1989 | |
| D324464 | Credle, Jr. et al. | Mar 1992 | |
| D335062 | Kolada et al. | Apr 1993 | |
| D343332 | Schroeder et al. | Jan 1994 | |
| D346088 | Schroeder | Apr 1994 | |
| D359412 | Minh | Jun 1995 | |
| D359874 | Smith et al. | Jul 1995 | |
| D365960 | Barish | Jan 1996 | |
| D367989 | Mills et al. | Mar 1996 | |
| D368617 | Jackson et al. | Apr 1996 | |
| 4550652 | Da Silva | Nov 1985 | |
| 4658872 | Ellis | Apr 1987 | |
| 4917155 | Koblasz et al. | Apr 1990 |