Number | Date | Country | Kind |
---|---|---|---|
80996070 | Aug 1980 | GBX |
Number | Name | Date | Kind |
---|---|---|---|
D216658 | Edmondson | Feb 1970 | |
D255160 | Gray | May 1980 | |
D258242 | Hood et al. | Feb 1981 | |
D260303 | Wordtmann | Aug 1981 | |
3722090 | Dawidowicz | Mar 1973 | |
3768162 | Perry | Oct 1973 | |
4309821 | Terry et al. | Jan 1982 |