| Number | Date | Country | Kind |
|---|---|---|---|
| 11-058091 | Mar 1999 | JP |
| Number | Name | Date | Kind |
|---|---|---|---|
| 5267734 | Stamper et al. | Dec 1993 | A |
| 5356156 | Suzuki et al. | Oct 1994 | A |
| 5754770 | Shiels et al. | May 1998 | A |
| 5805784 | Crawford | Sep 1998 | A |
| 5807173 | Aoyama | Sep 1998 | A |
| 5848934 | Shiels et al. | Dec 1998 | A |
| 5947823 | Nimura | Sep 1999 | A |
| 5993319 | Aoyama | Nov 1999 | A |
| 6102800 | Kitahara et al. | Aug 2000 | A |
| 6171189 | Katano et al. | Jan 2001 | B1 |
| Number | Date | Country |
|---|---|---|
| 10-179937 | Jul 1998 | JP |
| Entry |
|---|
| “Secrets of the MUD Wizards” by Andrew Busey, copyright 1995 by Sams.net Publishing. |