Number | Name | Date | Kind |
---|---|---|---|
3528193 | Yamakawa | Sep 1970 | |
3713246 | Kilroy, Jr. | Jan 1973 | |
3859749 | Morin et al. | Jan 1975 | |
4057886 | Brass | Nov 1977 | |
4582500 | Hanson et al. | Apr 1986 |
Number | Date | Country |
---|---|---|
832046 | Apr 1960 | GBX |
2090756 | Jul 1982 | GBX |
Entry |
---|
"Playdrill", from Playthings Magazine, Jul. 1964, vol. 62, No. 7. |