Number | Name | Date | Kind |
---|---|---|---|
D231464 | Dalke | Apr 1974 | |
D244387 | Butsch | May 1977 | |
D266670 | West | Oct 1982 | |
D285926 | Kies et al. | Sep 1986 | |
D286053 | McDaniel et al. | Oct 1986 | |
D303791 | Peart et al. | Oct 1989 | |
D304178 | Cranston, III et al. | Oct 1989 | |
D304937 | Sakuta | Dec 1989 | |
D308052 | Darden et al. | May 1990 | |
D318467 | Smith | Jul 1991 | |
D332256 | Lewis | Jan 1993 | |
4454596 | Wunsch et al. | Jun 1984 | |
4870605 | Vo | Sep 1989 | |
5233594 | Wilhelm | Aug 1993 |
Entry |
---|
IBM Technical Disclosure Bulletin vol. 21 No. 4 Sep. 1978 Open-Backed Magazine For Diskettes, pp. 1617-1619. |