Issued Patents 2004
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6687720 | Percentage and average calculator with expanded display | David L. Simmons, Peter Kirkwood House | 2004-02-03 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6687720 | Percentage and average calculator with expanded display | David L. Simmons, Peter Kirkwood House | 2004-02-03 |