Number | Name | Date | Kind |
---|---|---|---|
2271758 | Champion | Feb 1942 | |
3216350 | Sharkey | Nov 1965 | |
3287153 | Schwarz et al. | Nov 1966 | |
3418148 | Barz | Dec 1968 | |
3427971 | Steber et al. | Feb 1969 | |
3484271 | Kaliski et al. | Dec 1969 | |
3490368 | Bean | Jan 1970 | |
3607527 | Morley | Sep 1971 |
Number | Date | Country |
---|---|---|
959,315 | May 1964 | UK |
989,622 | Apr 1965 | UK |
Entry |
---|
IBM Technical Disclosure Bulletin, (Elt et al.), vol. 13, No. 9, Feb. 1971, p. 2476. |