| Number | Date | Country | Kind |
|---|---|---|---|
| 10 AR 158/87 | Sep 1987 | DEX |
| Number | Name | Date | Kind |
|---|---|---|---|
| D93329 | Crane | Sep 1934 | |
| D224533 | Hauser | Aug 1972 | |
| D259439 | Doman | Jun 1981 | |
| D293814 | Muck | Jan 1988 | |
| D296003 | Garza | May 1988 | |
| D297162 | Muck et al. | Aug 1988 | |
| D297163 | Blanc et al. | Aug 1988 | |
| D298163 | Downs | Oct 1988 | |
| D298164 | Downs | Oct 1988 | |
| 2524204 | O'Brien | Oct 1950 | |
| 3046569 | Holberson | Jul 1962 | |
| 4847927 | Blanc | Jul 1989 |
| Entry |
|---|
| Domestic Engineering, May 1981, p. 47. |