Number | Name | Date | Kind |
---|---|---|---|
2187750 | Maruin | Jan 1940 | |
2351678 | Hall | Jun 1944 | |
3429693 | Bauer et al. | Feb 1969 | |
3656888 | Barry et al. | Apr 1972 | |
3714325 | Bloom et al. | Jan 1973 | |
4165362 | Reynolds | Aug 1979 | |
4167555 | Gomes et al. | Sep 1979 |
Number | Date | Country |
---|---|---|
459554 | Jan 1937 | GBX |
290939 | Feb 1971 | SUX |
Entry |
---|
Yih et al, "Tungsten", Plenum Press, New York, 1979, pp. 82-83. |