| Number | Name | Date | Kind |
|---|---|---|---|
| D168527 | Arant | Jan 1953 | |
| D171492 | Erickson et al. | Feb 1954 | |
| D227196 | Griswold | Jun 1973 | |
| D261073 | Spruill et al. | Oct 1981 | |
| 867719 | Hansen | Oct 1907 | |
| 3098233 | Hoagland | Jul 1963 |
| Entry |
|---|
| Modern Plastics, Jul. 1953, p. 92; Bubble Helmet, top left on page. |
| Toys and Novelties, Mar. 1964, p. 406; "My Favorite Martian Hat" center left on page. |