Issued Patents 2005
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6956560 | Selection of mathematical objects from the history screen on a handheld device | J. Douglas Child, Laura Harvey | 2005-10-18 |
| 6922710 | Hand-held calculator with problems and operations linked lists | J. Douglas Child, Todd Fortenberry | 2005-07-26 |