Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4737980 | Computer data entry method and apparatus | William J. Curtin, Nora Curtin | 1988-04-12 |
| 4727357 | Compact keyboard system | William J. Curtin, John E. Morley, Nora Curtin | 1988-02-23 |
| 4701950 | Telephone answering system with line detector | William J. Curtin, Steven D. Krueger | 1987-10-20 |
| 4674116 | Telephone line concentrator without switching matrix | William J. Curtin, Cedric J. Adams | 1987-06-16 |
| 4634811 | Call screening system | William J. Curtin | 1987-01-06 |
| 4629831 | Series connected interceptor | William J. Curtin, Steven D. Krueger | 1986-12-16 |