Number | Date | Country | Kind |
---|---|---|---|
8900953 | Jan 1989 | GBX |
Number | Name | Date | Kind |
---|---|---|---|
3694412 | Nozaki | Sep 1972 | |
4070532 | Hammer | Jan 1978 | |
4115364 | Kimura et al. | Sep 1978 | |
4868254 | Wong | Sep 1989 |
Number | Date | Country |
---|---|---|
121965 | Oct 1984 | EPX |
257663 | Mar 1988 | EPX |
2600431 | Aug 1976 | DEX |
583174 | Aug 1943 | GBX |
1567374 | May 1980 | GBX |
Entry |
---|
John F. Blias Amino Resins Reinhold Pub. Co., 1959, pp. 190-191. |