Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12354133 | Methods and systems for detecting fraudulent advertisements in pay-per-call advertising | David E. Stafford, Jr. | 2025-07-08 |
| 11948169 | Methods and systems for detecting fraudulent advertisements in pay-per-call advertising | David E. Stafford, Jr. | 2024-04-02 |
| 11798027 | Methods and systems for detecting fraudulent advertisements in pay-per-call advertising | David E. Stafford, Jr. | 2023-10-24 |
| 10776819 | Methods and systems for detecting fraudulent advertisements in pay-per-call advertising | David E. Stafford, Jr. | 2020-09-15 |
| 10600081 | Methods and systems for detecting fraudulent advertisements in pay-per-call advertising | David E. Stafford, Jr. | 2020-03-24 |
| 5273172 | Closure device for drinking from containers | Stefan Metzger, Peter A. Killmann | 1993-12-28 |