Number | Date | Country | Kind |
---|---|---|---|
03133/90 | Sep 1990 | CHX |
Number | Name | Date | Kind |
---|---|---|---|
3538584 | Carpenter et al. | Nov 1970 | |
4130367 | Guerrini et al. | Dec 1978 |
Number | Date | Country |
---|---|---|
0019649 | Jun 1979 | EPX |
0231645 | Aug 1987 | EPX |
0266056 | May 1988 | EPX |
639593 | Nov 1983 | CHX |
Entry |
---|
IBM Technical Disclosure Bulletin, vol. 32, No. 7, Dec. 1989, pp. 377-380. |