Number | Date | Country | Kind |
---|---|---|---|
87 17900 | Dec 1987 | FRX |
Number | Name | Date | Kind |
---|---|---|---|
3325882 | Chiou et al. | Jun 1967 | |
3387365 | Stelmak | Jun 1968 | |
3614832 | Chance et al. | Oct 1971 | |
3838984 | Crane et al. | Oct 1974 | |
3859723 | Hamer et al. | Jan 1975 | |
3998377 | Metz | Dec 1976 | |
4667402 | Wilde | May 1987 | |
4763409 | Takekawa et al. | Aug 1988 |
Number | Date | Country |
---|---|---|
0029785 | Nov 1980 | EPX |
0207853 | Jan 1987 | EPX |
0246973 | Nov 1987 | EPX |
2483128 | Nov 1981 | FRX |
2088630 | Jun 1982 | GBX |
Entry |
---|
IBM Tech Discl Bull, vol. 11, No. 3, Aug. 1968, pp. 309-310 by F. J. Kurtz. |