Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5870319 | Device and method for collecting data from graphed images | Glen A. Thornton, David Stone, Veronica L. Howard | 1999-02-09 |
| 4823311 | Calculator keyboard with user definable function keys and with programmably alterable interactive labels for certain function keys | Arthur C. Hunter | 1989-04-18 |
| 4521868 | Electronic data processing apparatus with equation operating system having improved exponentiation operators | David Caldwell, Arthur C. Hunter | 1985-06-04 |
| 4519045 | Electronic data processing apparatus with equation operating system having improved unary operation implementation | David Caldwell, Arthur C. Hunter | 1985-05-21 |
| 4495592 | Electronic data processing apparatus with equation operating system having implied multiplication of two hierarchical ranks | David Caldwell, Arthur C. Hunter | 1985-01-22 |