Number | Name | Date | Kind |
---|---|---|---|
D246766 | Everest | Dec 1977 | |
4602642 | O'Hara et al. | Jul 1986 | |
4634294 | Christol et al. | Jan 1987 | |
4790324 | O'Hara et al. | Dec 1988 | |
4797840 | Fraden | Jan 1989 | |
4863281 | Suszynski | Sep 1989 | |
4895164 | Wood | Jan 1990 |
Entry |
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Wahl, Digital Heat Spy, 8/11/75, p. 5. |