Number | Name | Date | Kind |
---|---|---|---|
4266974 | Nitta et al. | May 1981 | |
4382818 | Mocarski | May 1983 | |
4690711 | Coad | Sep 1987 | |
4696696 | Fujita et al. | Sep 1987 | |
4743425 | Ohsaki et al. | May 1988 |
Number | Date | Country |
---|---|---|
58-130249 | Aug 1983 | JPX |
Entry |
---|
Salak, Ferrous Powder Metallurgy (1995) 174-176; 252-255. |