Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10212266 | Phone fraud deterrence system for use with toll free and other fee generating numbers | Irvin M. Shapiro, Phil Seguin | 2019-02-19 |
| 4587859 | Seismic trigger | Graham E. Coombes | 1986-05-13 |
| 4531533 | Seismic trigger | Graham E. Coombes | 1985-07-30 |