Issued Patents All Time
Showing 1–12 of 12 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5995386 | Control circuit arrangement for limiting output current in power switching transistor | Paul John | 1999-11-30 |
| 5991634 | """Plug and play"" telephone system" | Chiu L. Hui, Francis X. McGroary | 1999-11-23 |
| 5475579 | Pulse width modulator for switching power supply | Paul John | 1995-12-12 |
| 5416361 | Low dissipation snubber for switching power transistor | Paul John | 1995-05-16 |
| 5097501 | Key telephone interface | — | 1992-03-17 |
| 5048080 | Control and interface apparatus for telephone systems | John Bell, David F. Jones, Farid Bruce Khalili, Thong V. Luu, Manhar R. Mahida | 1991-09-10 |
| 5027083 | General purpose low cost digital amplitude regulator | Eugene J. Rosenthal | 1991-06-25 |
| 5010306 | Low cost digital amplitude regulator | Eugene J. Rosenthal | 1991-04-23 |
| 4642550 | Self-oscillating switching regulator having real-time current adjustment control | Vincent A. Illuzzi, Allen J. Rooney | 1987-02-10 |
| 4306119 | Telephone outpulsing circuit | — | 1981-12-15 |
| 4279020 | Power supply circuit for a data processor | Ronald Christian | 1981-07-14 |
| 4218649 | High voltage leakage and breakdown test circuit | — | 1980-08-19 |