Number | Date | Country | Kind |
---|---|---|---|
58-120457 | Jul 1983 | JPX | |
58-120458 | Jul 1983 | JPX |
Number | Name | Date | Kind |
---|---|---|---|
3856478 | Iwata et al. | Dec 1974 | |
3982905 | Osawa et al. | Sep 1976 | |
4035159 | Hashimoto et al. | Jun 1976 | |
4346684 | Vossieck | Aug 1982 | |
4424953 | Takagi et al. | Jan 1984 |
Number | Date | Country |
---|---|---|
28407 | Mar 1977 | JPX |
3654 | Jan 1981 | JPX |
20146 | Feb 1981 | JPX |
169750 | Dec 1981 | JPX |
2016046 | Sep 1979 | GBX |
Entry |
---|
Chem. Abs., 55-Ferrous Metals vol. 87:139209q; "Powder Metallurgy Materials for Exhaust Valve Seat Rings Performing with Lead-Free Gasoline," Mod. Dev. Powder Metall. |