Number | Name | Date | Kind |
---|---|---|---|
3796928 | Doo et al. | Mar 1974 | |
3836992 | Abbas et al. | Sep 1974 |
Entry |
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IBM Technical Disclosure Bulletin; by Abbas; vol. 15 No. 6 Nov. 1972 p. 1981. |
IBM Technical Disclosure Bulletin; by Freed et al. vol. 15, No. 12 May 1973; pp. 3895-3896. |