Number | Name | Date | Kind |
---|---|---|---|
3045072 | Brede | Jun 1962 | |
3180549 | Buhrendorf et al. | Apr 1965 | |
3405855 | Daly et al. | Oct 1968 | |
3528309 | Laybounn | Sep 1970 | |
3779481 | Wilson | Dec 1973 | |
3843035 | Fitterer et al. | Oct 1974 | |
3945036 | Karsh | Mar 1976 | |
4017904 | Tsukamoto et al. | Apr 1977 |
Entry |
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IBM Tech. Disclosure Bulletin, Capstan Surface Grooves to Improve Tape Guidance, J. W. Lewis et al., vol. 14, No. 3, Aug. 1971, p. 3. |