Number | Date | Country | Kind |
---|---|---|---|
89039986 | Nov 1989 | SEX |
Number | Name | Date | Kind |
---|---|---|---|
2906627 | Payton et al. | Sep 1959 | |
3222800 | Siegel et al. | Dec 1965 | |
3257769 | Ford | Jun 1966 | |
3357153 | Shaffer | Dec 1967 | |
3621588 | Grocke | Nov 1971 | |
3673703 | Wieligmann | Jul 1972 | |
3727324 | Melgaard | Apr 1973 | |
3744146 | Nichols | Jul 1973 | |
3777446 | Graver | Dec 1973 | |
3807126 | Schwarz | Apr 1974 | |
3811201 | Endter et al. | May 1974 | |
3826017 | Kostur | Jul 1974 | |
3980515 | Reil et al. | Sep 1976 | |
4204379 | Mugnai et al. | May 1980 | |
4273981 | Nopper | Jun 1981 | |
4497999 | Postbeschild | Feb 1985 | |
4511426 | Linner | Apr 1985 | |
4597247 | Johnson | Jul 1986 |
Number | Date | Country |
---|---|---|
1069349 | Mar 1967 | GBX |
Entry |
---|
IBM Technical Disclosure Bulletin, vol. 8, No. 12, May 1966 (J. Young). |