Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4769697 | Passive television audience measuring systems | Gilbert R. Marguth, Jr. | 1988-09-06 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4769697 | Passive television audience measuring systems | Gilbert R. Marguth, Jr. | 1988-09-06 |