Number | Name | Date | Kind |
---|---|---|---|
85299 | Gaines | Dec 1868 | A |
2492563 | Flickinger | Dec 1949 | A |
2891322 | Brownlee | Jun 1959 | A |
3145482 | Edwards | Aug 1964 | A |
3423093 | Lahav | Jan 1969 | A |
3594923 | Midgley | Jul 1971 | A |
3608906 | Odler | Sep 1971 | A |
3724098 | McSmith | Apr 1973 | A |
3804417 | Dawson | Apr 1974 | A |
4199876 | Katz | Apr 1980 | A |
4934701 | Ting | Jun 1990 | A |
5071132 | Ward | Dec 1991 | A |
5131849 | Perrero | Jul 1992 | A |
5265029 | Ramsay | Nov 1993 | A |
5273289 | Morse | Dec 1993 | A |
6027117 | Goldberg | Feb 2000 | A |
6237914 | Saltanov | May 2001 | B1 |
Number | Date | Country |
---|---|---|
1498951 | Jan 1978 | GB |
1485293 | Jun 1989 | SU |
Entry |
---|
David S. Jackson, “Periodic Table Puzzle”, <http://www.his.com/˜geoworks/PeriodicC_Puzzle.html>, Aug. 1, 1998. |