Number | Date | Country | Kind |
---|---|---|---|
2827414 | Jun 1978 | DEX |
Number | Name | Date | Kind |
---|---|---|---|
2349796 | Stoughton | May 1944 | |
3280136 | Finkbeiner | Oct 1966 | |
3868383 | Hackler | Feb 1975 |
Number | Date | Country |
---|---|---|
729852 | Jan 1943 | DE2 |
Entry |
---|
Chemical Reviews vol. 58, pp. 71-73, (1958). |