Issued Patents All Time
Showing 26–39 of 39 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5502459 | Optical auxiliary input arrangement and method of using same | Roger N. Marshall, Richard M. Lizon | 1996-03-26 |
| 5499036 | Display control apparatus and method of using same | — | 1996-03-12 |
| 5489923 | Method and apparatus for calibrating an optical computer input system | Roger N. Marshall, Leonid Shapiro, Jeffrey W. Busch, Eric S. Stevens | 1996-02-06 |
| 5471636 | Software development system and method of using same | — | 1995-11-28 |
| 5405153 | Musical electronic game | — | 1995-04-11 |
| 5400095 | Display projection method and apparatus an optical input device therefor | Arthur P. Minich, David Kappel | 1995-03-21 |
| 5276436 | Television signal projection system and method of using same | Robert W. Shaw, Randall S. Farwell, Leonid Shapiro | 1994-01-04 |
| 5188565 | Novelty device and method of using same | — | 1993-02-23 |
| 5181015 | Method and apparatus for calibrating an optical computer input system | Roger N. Marshall, Leonid Shapiro, Jeffrey W. Busch, Eric S. Stevens | 1993-01-19 |
| 5179648 | Computer auxiliary viewing system | — | 1993-01-12 |
| 5062001 | Gray scale system for visual displays | Randall S. Farwell, Leonid Shapiro | 1991-10-29 |
| 4849928 | Logic array programmer | — | 1989-07-18 |
| 4779079 | Multi-purpose computer utility arrangement | — | 1988-10-18 |
| 4706067 | Switch actuated communication device | — | 1987-11-10 |