Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8798244 | Handheld electronic device having service-specific message management feature support and associated method | — | 2014-08-05 |
| 8208610 | Handheld electronic device having service-specific message management feature support and associated method | — | 2012-06-26 |
| 4937851 | Loop status verification system | James P. Hogan | 1990-06-26 |
| 4864598 | Loop status verification system | James P. Hogan | 1989-09-05 |
| 4788710 | Telephone line selection and isolation method and apparatus | — | 1988-11-29 |
| 4701949 | Frequency responsive party telephone line selection apparatus and method | Steven B. Perry | 1987-10-20 |
| 4686696 | Transmission line signal sensing circuit employing means for conserving power, especially for use with a telephone disconnect circuit, and associated method | — | 1987-08-11 |
| 4682347 | Telephone line selection and isolation method and apparatus | — | 1987-07-21 |
| 4679224 | Telephone line testing circuit | Steven B. Perry | 1987-07-07 |
| 4550225 | AC Signal-activated switching apparatus | Steven B. Perry | 1985-10-29 |