Number | Name | Date | Kind |
---|---|---|---|
2848931 | Troidl | Aug 1958 | |
2880657 | Bartlett | Apr 1959 | |
3563486 | Mortsel et al. | Feb 1971 | |
3640204 | Gordon | Feb 1972 | |
3667361 | Meggs et al. | Jun 1972 | |
3680462 | Cronig | Aug 1972 | |
4167318 | Wareham | Sep 1979 | |
4200383 | Bendoni et al. | Apr 1980 |
Entry |
---|
Research Disclosure Apr., 1980 pp. 132-134. |