Issued Patents All Time
Showing 1–16 of 16 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6047063 | Methods and apparatus for providing an auxiliary communication line | — | 2000-04-04 |
| 5557669 | Channel interface unit | James P. Hogan | 1996-09-17 |
| 5557670 | Channel interface unit | James P. Hogan | 1996-09-17 |
| 5557672 | Channel interface unit | James P. Hogan | 1996-09-17 |
| 5086459 | Timing circuit and a secure telephone jack utilizing this circuit | — | 1992-02-04 |
| 4807277 | Remotely activated switching apparatus | — | 1989-02-21 |
| 4796290 | Ground start circuit | — | 1989-01-03 |
| 4761810 | Programmable selective ringing circuit and method for party telephone line | — | 1988-08-02 |
| 4701949 | Frequency responsive party telephone line selection apparatus and method | Daniel Lynch | 1987-10-20 |
| 4686700 | Telephone off-hook detector circuit | — | 1987-08-11 |
| 4679224 | Telephone line testing circuit | Daniel Lynch | 1987-07-07 |
| 4624294 | Wood thickness attachment | Charles A. Robinson, George Spector | 1986-11-25 |
| D282654 | Network interface enclosure | Thomas J. Collins | 1986-02-18 |
| 4558182 | Remotely-activated switching apparatus | Joseph John Miller, Jr. | 1985-12-10 |
| 4550225 | AC Signal-activated switching apparatus | Daniel Lynch | 1985-10-29 |
| 4536617 | Remotely-activated switching apparatus | — | 1985-08-20 |