Number | Date | Country | Kind |
---|---|---|---|
4010252 | Mar 1990 | DEX | |
4021726 | Jul 1990 | DEX | |
4106340 | Feb 1991 | DEX |
Number | Name | Date | Kind |
---|---|---|---|
2640082 | Schreyer | May 1953 | |
3177258 | Rylander et al. | Apr 1965 | |
3355483 | Dickey et al. | Nov 1967 | |
3584045 | Feldman et al. | Jun 1971 | |
4042629 | Kershaw | Aug 1977 | |
4100111 | Peter et al. | Jul 1978 |
Number | Date | Country |
---|---|---|
2841585 | Mar 1980 | EPX |
0042119 | Dec 1981 | EPX |
2111765 | Sep 1971 | DEX |
1252427 | Nov 1971 | GBX |
1498998 | Jan 1978 | GBX |
Entry |
---|
C.R. Acad. Sc. Paris, Ser. C, 268, (1969) 1949-1952. |