Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4480305 | Programmable calculator including editing capability | Robert E. Watson, Jack M. Walden | 1984-10-30 |
| 4455607 | Programmable calculator having keys for performing angular measurement unit conversion | Robert E. Watson, Jack M. Walden | 1984-06-19 |
| 4412300 | Programmable calculator including alphabetic output capability | Robert E. Watson, Jack M. Walden | 1983-10-25 |
| 4384328 | Programmable calculator including magnetic reading and recording means | Robert E. Watson, Jack M. Walden | 1983-05-17 |
| 4203152 | Programmable calculator including key-log printing means | Robert E. Watson, Jack M. Walden | 1980-05-13 |