Issued Patents 2004
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6750859 | Size conditioned visibility search system and method | Henry Sowizral, Karel Zikan | 2004-06-15 |
| 6731304 | Using ancillary geometry for visibility determination | Henry Sowizral, Karel Zikan | 2004-05-04 |