Number | Date | Country | Kind |
---|---|---|---|
9-321004 | Nov 1997 | JP |
Number | Name | Date | Kind |
---|---|---|---|
3755459 | Diamond | Aug 1973 | |
4520204 | Evans | May 1985 | |
5705696 | King, Jr. | Jan 1998 | |
5741931 | Naumann | Apr 1998 |
Entry |
---|
Journal of American Chem Soc by Willard vol. 70, pp 737-738, 1948.* |