Number | Date | Country | Kind |
---|---|---|---|
2441694 | Aug 1974 | DT |
Number | Name | Date | Kind |
---|---|---|---|
2069595 | Thomas | Feb 1937 | |
2831424 | MacDonald | Apr 1958 | |
2880445 | Wallis | Apr 1959 | |
3120177 | Clark | Feb 1964 | |
3283876 | Kern | Nov 1966 | |
3289805 | Kleinschmidt et al. | Dec 1966 | |
3349887 | Goff | Oct 1967 | |
3532204 | Sasaki | Oct 1970 | |
3841459 | Buschmann et al. | Oct 1974 |
Entry |
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Cross, Ribbon Drive, IBM Technical Disclosure Bulletin, vol. 15, No. 7, 12/72, p. 2312. |