Issued Patents All Time
Showing 26–41 of 41 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5779633 | Tonometer air pulse generator | — | 1998-07-14 |
| 5754273 | Non-contact tonometer having off-axis fluid pulse system | — | 1998-05-19 |
| 5587748 | Joystick override control for an ophthalmic instrument | Donald E. Miller | 1996-12-24 |
| D369112 | Lensmeter | Christopher Percival, Paul J. Klock | 1996-04-23 |
| 5471260 | Joystick for an ophthalmic instrument where vertical movement is controlled by rotating the joystick | Joseph Zelvin | 1995-11-28 |
| 5446274 | Instructive display for assisting in centering an optical path element on a path | Christopher Percival | 1995-08-29 |
| 5381196 | Contrast sensitivity tester | Bernard Grolman | 1995-01-10 |
| 5301004 | Method and apparatus for determining the optical properties of a lens | Christopher Percival | 1994-04-05 |
| 4881807 | Optical alignment system | Srdjan Krstanovic | 1989-11-21 |
| 4503745 | Musical instrument | Melville Clark, Jr. | 1985-03-12 |
| 4463647 | Musical instrument | — | 1984-08-07 |
| 4365533 | Musical instrument | Melville Clark, Jr. | 1982-12-28 |
| 4352311 | Synthesizer preset editing techniques | James L. Scott | 1982-10-05 |
| 4334195 | Voltage controlled attenuator | — | 1982-06-08 |
| 4291604 | Memory override system for programmed electronic synthesizer | James L. Scott | 1981-09-29 |
| 4228717 | Electronic musical instrument capable of generating a chorus sound | — | 1980-10-21 |