| Number | Name | Date | Kind |
|---|---|---|---|
| 1612075 | Tapman | Dec 1926 | |
| 1889770 | Black | Dec 1932 | |
| 2015129 | Voigt et al. | Sep 1935 | |
| 2584194 | Drury | Feb 1952 | |
| 2814840 | Sears | Dec 1957 | |
| 3174256 | Lockwood | Mar 1965 | |
| 3181662 | Maertzig, Jr. | May 1965 | |
| 3225504 | Gregoire | Dec 1965 | |
| 3300924 | Ashby et al. | Jan 1967 | |
| 3495368 | Krause | Feb 1970 | |
| 3815309 | Olsen | Jun 1974 | |
| 4069738 | McClure | Jan 1978 | |
| 4150465 | Gavin, Jr. | Apr 1979 | |
| 4296530 | Muller et al. | Oct 1981 | |
| 4370840 | Bisbee et al. | Feb 1983 | |
| 4649689 | Everman et al. | Mar 1987 | |
| 4653241 | Bindi | Mar 1987 | |
| 4995215 | Menchetti | Feb 1991 | |
| 5299403 | Fentz | Apr 1994 | |
| 5417530 | Grossner | May 1995 | |
| 5426905 | Rollhauser et al. | Jun 1995 | |
| 6067691 | Feltman | May 2000 | |
| 6070837 | Bond | Jun 2000 |
| Number | Date | Country |
|---|---|---|
| 2198163 | Nov 1987 | GB |
| Entry |
|---|
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