Issued Patents 1994
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5331544 | Market research method and system for collecting retail store and shopper market research data | Daozheng Lu, Jia Zhang | 1994-07-19 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5331544 | Market research method and system for collecting retail store and shopper market research data | Daozheng Lu, Jia Zhang | 1994-07-19 |