| Number | Date | Country | Kind |
|---|---|---|---|
| 2302582 | Jan 1973 | DEX |
This application is a continuation-in-part of our copending application Ser. No. 434,248 (now abandoned).
| Number | Name | Date | Kind |
|---|---|---|---|
| 3527748 | Ackermann et al. | Sep 1970 | |
| 3531457 | Ackermann et al. | Sep 1970 | |
| 3531458 | Ackermann et al. | Sep 1970 | |
| 3532682 | Ackermann et al. | Oct 1970 | |
| 3558261 | Ackermann et al. | Jan 1971 | |
| 3598801 | Beffa et al. | Aug 1971 | |
| 3856772 | Dunkelmann et al. | Dec 1974 |
| Number | Date | Country |
|---|---|---|
| 2302582 | Aug 1974 | DEX |
| Entry |
|---|
| Venkataraman, "The Chemistry of Synthetic Dyes", vol. I, Academic Press Inc., New York, 1952, p. 270. |
| Number | Date | Country | |
|---|---|---|---|
| Parent | 434248 | Jan 1974 |