Number | Date | Country | Kind |
---|---|---|---|
7422818 | Jul 1974 | DT |
Number | Name | Date | Kind |
---|---|---|---|
3841622 | Swanson | Oct 1974 | |
3856295 | Looney | Dec 1974 | |
3871270 | Kuckhermann et al. | Mar 1975 |
Entry |
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Harding, S. R., "Sheet Turnover Device", IBM Technical Disclosure Bulletin, vol. 18, No. 1, June, 1975. |