Number | Name | Date | Kind |
---|---|---|---|
1969187 | Schutt | Aug 1934 | |
2668420 | Hammell | Feb 1954 | |
4055963 | Shoji | Nov 1977 | |
4142678 | Bottum | Mar 1979 | |
4154063 | Aleksandrow | May 1979 | |
4178769 | Johnsen | Dec 1979 | |
4246764 | Papadakos | Jan 1981 | |
4254630 | Geary | Mar 1981 | |
4285392 | Rannow | Aug 1981 | |
4305456 | Mueller et al. | Dec 1981 |
Number | Date | Country |
---|---|---|
144398 | Dec 1930 | CHX |
Entry |
---|
Popular Science, Aug. 1980 pp. 12 and 14. |