Number | Date | Country | Kind |
---|---|---|---|
3139262 | Oct 1981 | DEX |
Number | Name | Date | Kind |
---|---|---|---|
1813419 | Parker | Jul 1931 | |
3605530 | Doty | Sep 1971 | |
3778071 | Buck | Dec 1973 | |
3944379 | Elrod | Mar 1976 | |
4104937 | Breaux | Aug 1978 | |
4147462 | Appleby et al. | Apr 1979 | |
4364290 | Astle | Dec 1982 |
Number | Date | Country |
---|---|---|
2549671 | May 1977 | DEX |
Entry |
---|
Translation of German 2549671. |