| Number | Name | Date | Kind |
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| 3765356 | Cook | Oct 1973 | A |
| 3964417 | Williams et al. | Jun 1976 | A |
| 4034696 | Kureth | Jul 1977 | A |
| 4040373 | Jones, Jr. | Aug 1977 | A |
| 4205618 | Olsson | Jun 1980 | A |
| 4304557 | Henrich | Dec 1981 | A |
| 4323355 | Kondo | Apr 1982 | A |
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| Number | Date | Country |
|---|---|---|
| 716 879 | Oct 1954 | GB |
| 226 596 | May 1969 | SE |