Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4841343 | Dry film development process for an aperture card printer | Esther Lim, Robert J. Grady | 1989-06-20 |
| 4818950 | Low jitter phase-locked loop | — | 1989-04-04 |
| 4794224 | Dry film developer for an aperture card printer | Semyon Spektor, Michael Veprinsky | 1988-12-27 |
| 4779473 | Gimbal apparatus for translating rotational motion to accurate linear motion | Robert J. Grady, Rolf D. Kahle, Semyon Spektor, Michael Veprinsky | 1988-10-25 |
| 4777495 | Aperture card plotter | Semyon Spektor, Robert J. Grady, Wilson S. Chinn, Alexander J. McKennon, Samuel D. I. Emerson, III | 1988-10-11 |
| 4764778 | Intensity controller for an aperture card plotter | Semyon Spektor | 1988-08-16 |
| 4757247 | Single step stepping motor controller | — | 1988-07-12 |