Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4824247 | Method and apparatus for measuring sperm penetration | Karen J. True, G. Barbara Griffin, Daniel V. Griffin | 1989-04-25 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4824247 | Method and apparatus for measuring sperm penetration | Karen J. True, G. Barbara Griffin, Daniel V. Griffin | 1989-04-25 |