Number | Date | Country | Kind |
---|---|---|---|
8606292 | Mar 1986 | GBX | |
8609590 | Apr 1986 | GBX |
This is a continuation of Ser. No. 025,230 filed Mar. 12, 1987.
Number | Name | Date | Kind |
---|---|---|---|
2312208 | Clayton et al. | Feb 1949 | |
2862952 | Washburn et al. | Dec 1958 | |
2898365 | Washburn et al. | Aug 1959 | |
3030406 | Groszos | Apr 1962 | |
3090801 | Washburn et al. | May 1963 |
Number | Date | Country | |
---|---|---|---|
Parent | 25230 | Mar 1987 |