Number | Date | Country | Kind |
---|---|---|---|
2247274 | Sep 1972 | DT |
Number | Name | Date | Kind |
---|---|---|---|
2883722 | Bidner | Apr 1959 | |
3465811 | Castelet | Sep 1969 | |
3558256 | Bick et al. | Jan 1971 | |
3782596 | Griffiths | Jan 1974 | |
3810753 | Miltenberger | May 1974 |
Number | Date | Country |
---|---|---|
563,076 | Dec 1957 | BE |
Entry |
---|
McDonough, Journal of Metals, Apr. 1954, pp. 443-446. |