| Number | Name | Date | Kind |
|---|---|---|---|
| 2709211 | Glynn | May 1955 | A |
| 2787693 | Razlag | Apr 1957 | A |
| RE25591 | Swengel | Jun 1964 | E |
| 3383457 | Schumacher | May 1968 | A |
| 3534148 | Bange | Oct 1970 | A |
| 3743748 | Reder | Jul 1973 | A |
| 3981556 | Sabatelli et al. | Sep 1976 | A |
| 4023008 | Durussel | May 1977 | A |
| 4415196 | Baum et al. | Nov 1983 | A |
| 4425021 | Nicolino | Jan 1984 | A |
| 5268700 | Hirotsu et al. | Dec 1993 | A |
| 5357074 | Pawlikowski | Oct 1994 | A |
| 5631806 | Fried et al. | May 1997 | A |
| 5879206 | Badgley et al. | Mar 1999 | A |
| 5928455 | Dizin et al. | Jul 1999 | A |
| 6039616 | Pereira et al. | Mar 2000 | A |
| Entry |
|---|
| IBM Technical Disclosure, vol. 33, No. 1 B, p478, Jun. 1990. |