Number | Date | Country | Kind |
---|---|---|---|
21566 A/79 | Apr 1979 | ITX |
Number | Name | Date | Kind |
---|---|---|---|
2720506 | Caldwell et al. | Oct 1955 | |
3060216 | Hamprecht et al. | Oct 1962 | |
3147272 | Brown et al. | Sep 1964 | |
3184492 | Cole | May 1965 | |
3361782 | Ziegler et al. | Jan 1968 | |
3394158 | Chini et al. | Jul 1968 | |
3761500 | Thomas | Sep 1973 | |
3773816 | Honigschmid-Grossich et al. | Nov 1973 | |
4120883 | Sakurai et al. | Oct 1978 |