Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4546448 | Programmable calculator including program variable initialization means and definition means array | Richard M. Spangler, Eugene V. Burmeister, Frank E. Cada, Wayne F. Covington, Myles A. Judd +3 more | 1985-10-08 |
| 4437156 | Programmable calculator | Fred Wenninger, Jr., Donald E. Morris, Wayne F. Covington, Jerry B. Folsom, Joseph W. Beyers +2 more | 1984-03-13 |
| 4366553 | Electronic computing apparatus employing basic language | Richard M. Spangler, Eugene V. Burmeister, Frank E. Cada, Wayne F. Covington, Myles A. Judd +3 more | 1982-12-28 |
| 4322816 | Programmable calculator having structure for controlling an x-y plotter | Richard M. Spangler, Eugene V. Burmeister, Frank E. Cada, Wayne F. Covington, Myles A. Judd +3 more | 1982-03-30 |