Number | Date | Country | Kind |
---|---|---|---|
82301683.7 | Mar 1982 | EPX |
Number | Name | Date | Kind |
---|---|---|---|
3866080 | Barkow | Feb 1975 |
Number | Date | Country |
---|---|---|
2571 | Jun 1971 | EPX |
2228293 | Nov 1974 | FRX |
Entry |
---|
IBM Technical Disclosure Bulletin, vol. 24, No. 2, Jul. 1981, pp. 1061-1062. |
IBM Technical Disclosure Bulletin, vol. 24, No. 2, Jul. 1981. |