Number | Date | Country | Kind |
---|---|---|---|
61-112045 | May 1986 | JPX |
Number | Name | Date | Kind |
---|---|---|---|
3288758 | Letort | Nov 1966 | |
4342680 | Sugio | Aug 1982 | |
4506053 | Sakurai | Mar 1985 | |
4517319 | Reske | May 1985 | |
4526921 | Sakurai | Jul 1985 | |
4596847 | Kasuga | Jun 1986 |
Entry |
---|
Derwent Abstract, Celanese, 68-14071p/01, Jan. 1968. |