| Number | Name | Date | Kind |
|---|---|---|---|
| D199021 | Stairs, Jr. | Sep 1964 | |
| D199235 | Tiller | Sep 1964 | |
| D215656 | Armstrong | Oct 1969 | |
| D237884 | Kovol | Dec 1975 | |
| D261799 | Alger | Nov 1981 | |
| D276176 | Kaiser | Oct 1984 | |
| 4162548 | Groombridge et al. | Jul 1979 |
| Entry |
|---|
| Domestic Engineering, Mar. 1963, p. 139, Items (B) and (C). |