Issued Patents 2004
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6755655 | Electronic educational toy appliance and a portable memory device therefor | Brian I. Marcus | 2004-06-29 |
| 6739874 | Electronic educational toy appliance teaching letters words and numbers | Brian I. Marcus | 2004-05-25 |
| 6729881 | Electronic educational toy appliance and a portable memory device therefor | Brian I. Marcus | 2004-05-04 |
| 6726485 | Electronic educational toy appliance and a portable memory device therefor | Brian I. Marcus | 2004-04-27 |