| Number | Name | Date | Kind |
|---|---|---|---|
| D213078 | Katzman et al. | Dec 1968 | |
| D324915 | Wastchak | Mar 1992 | |
| 986738 | Milligan | Mar 1911 | |
| 2298361 | Freund | Oct 1942 | |
| 4077390 | Stanley et al. | Mar 1978 | |
| 4263912 | Adams | Apr 1981 | |
| 4323067 | Adams | Apr 1982 | |
| 4470196 | Powell | Apr 1988 | |
| 4572158 | Fiedler | Feb 1986 | |
| 4872442 | Manker | Oct 1989 | |
| 5050595 | Krafft | Sep 1991 | |
| 5058563 | Manker | Oct 1991 | |
| 5074300 | Murphy | Dec 1991 | |
| 5205278 | Wang | Apr 1993 | |
| 5230335 | Johnson, Jr. et al. | Jul 1993 | |
| 5235974 | Miller | Aug 1993 | |
| 5257429 | Genis | Nov 1993 | |
| 5261134 | Matthews | Nov 1993 | |
| 5304215 | MacWhinnie et al. | Apr 1994 |
| Number | Date | Country |
|---|---|---|
| 533493 | Feb 1941 | GBX |
| 660283 | Nov 1951 | GBX |
| 2155792 | Oct 1985 | GBX |
| Entry |
|---|
| Medela Hospital Catalogue, Medela, Inc., McHenry, Ill., pp. 32-36. |