Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4511987 | Method of entering and performing operations on complex numbers on calculators | David Caldwell | 1985-04-16 |
| 4507745 | Data processing apparatus having alterable interest rate mode capability | — | 1985-03-26 |