| Number | Name | Date | Kind |
|---|---|---|---|
| D. 364933 | Schalle | Dec 1995 | |
| 1434242 | Allbright | Oct 1922 | |
| 1439281 | Ambursen | Dec 1922 | |
| 3352079 | Strong | Nov 1967 | |
| 4411121 | Blacklin et al. | Oct 1983 | |
| 5107654 | Leonardis | Apr 1992 |
| Entry |
|---|
| “The Dome”, p. 9, The Uni-form System, Edward W. Davis, Boston MA, 1918. |