Number | Date | Country | Kind |
---|---|---|---|
79 25309 | Oct 1979 | FRX |
Number | Name | Date | Kind |
---|---|---|---|
2288754 | Story | Jul 1942 | |
3206415 | Koepnick et al. | Sep 1965 | |
3381019 | Morehouse | Apr 1968 | |
3935133 | van Leeuwen | Jan 1976 | |
4016163 | Kanner et al. | Apr 1977 | |
4067828 | Ka nner et al. | Jan 1978 |
Number | Date | Country |
---|---|---|
2288754 | Jun 1976 | FRX |
2291995 | Jun 1976 | FRX |
Entry |
---|
Suchanec-Anal. Chem. 37, No. 11, Oct. 1965, pp. 1361-1365. |
Published European Patent Application 761, Feb. 1979. |