Issued Patents All Time
Showing 1–8 of 8 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6064355 | Method and apparatus for playback with a virtual reality system | Daniel Martin Donahue | 2000-05-16 |
| 5566241 | Method and apparatus for presentation of on-line directional sound | Russell F. Lewis, Steven F. Martin, Norman A. Josephson | 1996-10-15 |
| 5499146 | Method and apparatus for recording images for a virtual reality system | Daniel Martin Donahue | 1996-03-12 |
| 5469511 | Method and apparatus for presentation of on-line directional sound | Russell F. Lewis, Steven F. Martin, Norman A. Josephson | 1995-11-21 |
| 5322441 | Method and apparatus for providing a portable visual display | Russell F. Lewis, Steven F. Martin, Norman A. Josephson | 1994-06-21 |
| 5294792 | Writing tip position sensing and processing apparatus | Russell F. Lewis, Floyd H. Hollister | 1994-03-15 |
| 5189288 | Method and system for automated voting | Julien Anno, Russell F. Lewis | 1993-02-23 |
| 5177872 | Method and apparatus for monitoring physical positioning of a user | Russell F. Lewis, Robert J. Gove | 1993-01-12 |