| Number | Name | Date | Kind |
|---|---|---|---|
| 1943685 | Mayorga | Jan 1934 | |
| 2258272 | Alexander | Oct 1971 | |
| 2769639 | Seale | Nov 1956 | |
| 2825564 | Macht et al. | Mar 1958 | |
| 3655189 | Alexander | Apr 1972 | |
| 3860239 | Feuer et al. | Jan 1975 | |
| 4195838 | Santandrea | Apr 1980 | |
| 4240632 | Watanabe | Dec 1980 | |
| 4240633 | Watanabe | Dec 1980 | |
| 4324402 | Klose | Apr 1982 | |
| 4326715 | Ito et al. | Apr 1982 |
| Entry |
|---|
| Mattel Electronics.RTM.Baseball Instructions; 1978; pp. 1-14. |