Number | Name | Date | Kind |
---|---|---|---|
3263842 | Holstein | Aug 1966 | |
3272350 | Pflaumer et al. | Sep 1966 | |
3719023 | Richardson | Mar 1973 | |
3870175 | DiIanni | Mar 1975 | |
3957371 | Rich | May 1976 | |
4208159 | Uehara et al. | Jun 1980 |
Number | Date | Country |
---|---|---|
0040952 | Mar 1982 | JPX |
Entry |
---|
Pinckney, et al., "IBM Technical Disclosure Bulletin, vol. 15, No. 11, (Apr. 1973), p. 3520. |